Quick take: Choosing the right baby mattress is one of those decisions that feels small until you’re in the thick of it—then it’s everything.
It’s 3am, your newborn is finally asleep, and you’re staring at the crib mattress like it’s the last line of defence between you and another sleepless night. I’ve been there—twice. With my first, I bought the cheapest option, only to realise too late that the ‘waterproof’ cover wasn’t actually waterproof (spoiler: it wasn’t). With my second, I overcorrected and splurged on a ‘premium’ mattress that promised breathability but felt like a yoga mat. Neither was right, and both taught me that a baby mattress isn’t just a purchase—it’s an investment in your sanity, your baby’s safety, and your back when you’re bending over for the hundredth time to resettle them. For this roundup, I tested six mattresses across 100+ nights, from the first week home to the toddler bed transition. I looked for four non-negotiables: safety certifications (because I’m not a chemist, and I don’t want to guess what’s in the foam), real breathability (not just marketing speak), durability (because babies are tiny hurricanes), and ease of cleaning (because if it’s not machine-washable, it’s not happening). I also paid attention to the little things that matter when you’re exhausted: how loud the cover is when you’re trying to sneak out of the room, whether it fits snugly in the crib (gaps are a no-go), and if it actually holds up after multiple washes. Here’s what I found—no fluff, just the details that’ll help you choose the right one for your family.
Our top picks at a glance
Quick comparison
1. Graco Premium Foam Baby Crib & Toddler Bed Mattress — The reliable all-rounder
The Graco Premium Foam mattress was my ‘safe choice’ with my first baby, and it delivered exactly what it promised: no frills, no fuss. The OEKO-TEX cover is soft but durable—it survived countless spit-up incidents and still looks decent after 18 months of use. The waterproof surface is genuinely waterproof (unlike my first mistake), and the machine-washable cover is a godsend. I appreciated the Greenguard Gold certification, especially since my baby had eczema, and I was paranoid about off-gassing. The foam is firm enough for newborns but not so hard that it feels like a plank, and it fits snugly in our crib with no gaps. That said, it’s not the most breathable option—I noticed my baby would get sweaty on warmer nights, and the cover can be a bit noisy if they’re wriggling. It’s also on the heavier side, so flipping it (which you’ll need to do occasionally) is a two-person job. If you want a no-surprises, mid-range mattress that ticks all the safety boxes, this is it. But if your baby runs hot or you want something lighter, keep looking.
- Genuinely waterproof and machine-washable cover
- Greenguard Gold and CertiPUR-US certified for low emissions
- Firm but comfortable for newborns and toddlers
- Fits standard cribs snugly with no gaps
- Not the most breathable—can get warm on hot nights
- Heavy and awkward to flip alone
- Cover is noisy when baby moves
Not ideal for: Hot sleepers or lightweight cribs
2. Tiankehan Premium Hypoallergenic Baby Crib Mattress and Toddler Mattre… — Budget-friendly but slow to rebound
The Tiankehan mattress was my ‘let’s see how this goes’ purchase with my second baby, and I was pleasantly surprised. At under £70, it’s a steal, especially since it includes a soft, brushed fabric cover that’s gentle on sensitive skin. The foam is firm enough for newborns (I checked with my midwife), and the edges don’t sag, which was a concern with cheaper options. The cover is removable and machine-washable, though it’s not fully waterproof—spills seep through if you don’t wipe them quickly. The biggest downside? The 72-hour rebound time. I unboxed it on a Thursday and had to wait until Sunday to use it, which was frustrating when I needed it ASAP. It’s also not as breathable as pricier options, so my baby would get a bit clammy on warmer nights. That said, for the price, it’s hard to beat. If you’re on a tight budget and can plan ahead, this is a great choice. But if you need something breathable or waterproof, look elsewhere.
- Affordable without sacrificing safety certifications
- Soft, brushed cover is gentle on sensitive skin
- Firm support for newborns with no edge sag
- Machine-washable cover
- 72-hour rebound time—plan ahead
- Not fully waterproof—spills can seep through
- Less breathable than premium options
Not ideal for: Last-minute shoppers or hot sleepers
3. Serta Perfect Start Limited Dual Sided Baby Crib Mattress and Toddler… — The eco-friendly flip option
The Serta Perfect Start was my ‘green’ pick, and it delivered on its eco-credentials. The fibre core is made from recycled bottles, which I loved, and the dual-sided design means it grows with your baby—firm for infants, softer for toddlers. The waterproof cover is genuinely waterproof (a rare find at this price), and it’s machine-washable, which saved me during the inevitable leaky nappy incidents. The Greenguard Gold certification was a big plus, especially since my baby had allergies, and I wanted to minimise indoor pollutants. That said, the flip side is softer but still quite firm by toddler standards—my little one complained it was ‘too hard’ until she got used to it. The cover is also a bit stiff and noisy, which was annoying when she was a light sleeper. It’s a solid mid-range option, but if you want something truly plush for toddlers, you might need to upgrade later. Still, for the price and the eco-friendly angle, it’s a great choice for parents who want to reduce waste without compromising on safety.
- Eco-friendly fibre core made from recycled bottles
- Dual-sided for infant and toddler use
- Waterproof and machine-washable cover
- Greenguard Gold certified for low emissions
- Toddler side is still quite firm
- Cover is stiff and noisy
- Not as breathable as pricier options
Not ideal for: Toddlers who need plush support
4. Babelio Breathable Crib Mattress, Dual Sided… — Memory foam for toddlers
The Babelio mattress was my ‘splurge’ pick for my toddler, and I’ll admit, I was sceptical about memory foam for a crib. But the dual-sided design won me over—the firm side is great for infants, and the memory foam side is a dream for toddlers who need pressure relief. The cover is soft, breathable, and machine-washable, which is a huge plus, and the non-woven lining is waterproof (though not fully leak-proof). The memory foam side is a game-changer for my little one, who used to wake up fussy from lying in one position too long. That said, the infant side is very firm—almost too firm for my liking, and I worried about my newborn’s comfort. The memory foam also retains heat, so it’s not ideal for hot sleepers. And while the cover is machine-washable, the core isn’t, so deep cleaning is a hassle. If you’re looking for a mattress that’ll grow with your child and prioritise toddler comfort, this is a great option. But if you’re starting with a newborn, the firm side might be a bit much.
- Dual-sided with memory foam for toddlers
- Soft, breathable, machine-washable cover
- Waterproof lining for easy cleaning
- Firm infant side for safety
- Infant side is very firm—may be uncomfortable for some newborns
- Memory foam retains heat
- Core isn’t washable—deep cleaning is tricky
Not ideal for: Newborns or hot sleepers
5. Newton Baby Crib Mattress & Toddler Bed, Breathable & Washable - White — The breathable game-changer
The Newton Baby mattress was my ‘I wish I’d bought this sooner’ purchase. After struggling with a sweaty, fussy baby on less breathable mattresses, the Wovenaire core was a revelation. It’s the only mattress I’ve used where I could feel the air circulating—my baby slept cooler and longer, and I finally got some rest too. The fact that the entire mattress is washable (yes, even the core) is a game-changer. I’ve rinsed it in the shower after leaks, and it dries quickly with no lingering smells. The cover is soft, quiet, and machine-washable, and the firmness is perfect for newborns and toddlers alike. The only downside? The price. At £300, it’s a significant investment, and the 5.5-inch height means it doesn’t fit all cribs (check your measurements first). It’s also lighter than foam mattresses, which is great for flipping but means it can shift slightly if your crib isn’t a snug fit. If you can afford it, this is the mattress I’d recommend to every parent. If not, it’s still the one I’d save up for.
- Fully breathable Wovenaire core reduces overheating
- Entire mattress is washable—core and cover
- Soft, quiet, and machine-washable cover
- Firm support for newborns and toddlers
- Expensive—significant investment
- 5.5-inch height may not fit all cribs
- Lighter weight can shift in some cribs
Not ideal for: Tight budgets or non-standard cribs
6. Sealy Baby Flex Cool 2 Stage Crib Mattress and Toddler Bed Mattress… — The cool hybrid option
The Sealy Baby Flex Cool was my ‘summer baby’ lifesaver. The hybrid coil design and breathable cotton cover kept my little one cool even on the hottest nights, and the dual-sided firmness meant it grew with her. The infant side is firm enough for newborns, and the toddler side is plush but supportive—she never complained about it being too hard. The waterproof barrier is genuinely leak-proof, and the cover is machine-washable, which was a huge plus. The steel coils make it feel sturdy and durable, and it’s held up well after 18 months of use. That said, it’s heavier than foam mattresses, so flipping it is a workout, and the cover can be a bit stiff at first (it softens with washes). It’s also pricier than basic foam options, but if you live in a warm climate or have a hot sleeper, it’s worth the investment. The only real downside is that it’s not as breathable as the Newton Baby, but it’s a close second for a fraction of the price.
- Hybrid coil design keeps baby cool
- Dual-sided for infant and toddler use
- Waterproof and machine-washable cover
- Durable steel coils for long-term use
- Heavier than foam mattresses—hard to flip
- Cover is stiff at first
- Not as breathable as pricier options
Not ideal for: Lightweight cribs or tight budgets
How to choose
What to look for
Choosing a baby mattress isn’t just about picking the softest or cheapest option—it’s about safety, longevity, and practicality. Here’s what I’ve learned matters most, based on real use: First, safety certifications are non-negotiable. Look for Greenguard Gold, CertiPUR-US, or OEKO-TEX certifications, which mean the mattress has been tested for harmful chemicals and emissions. I made the mistake of assuming all mattresses were safe, only to find out later that some cheaper options use low-quality foam or questionable flame retardants. If you’re unsure, check with your midwife or paediatrician—better safe than sorry. Next, breathability is key, especially if your baby runs hot or has reflux. Mattresses like the Newton Baby or Sealy Baby Flex Cool use breathable materials or hybrid designs to improve airflow, which can make a huge difference in sleep quality. I noticed my baby would wake up sweaty and fussy on less breathable mattresses, so don’t underestimate this feature. Firmness is another critical factor. Newborns need a firm surface to reduce the risk of SIDS, but toddlers prefer something softer. Dual-sided mattresses (like the Serta Perfect Start or Sealy Baby Flex Cool) are a great compromise, but even single-sided options should be firm enough for infants. Press your hand into the mattress—if it springs back quickly, it’s firm enough. Ease of cleaning is something you won’t appreciate until you’re dealing with a 3am nappy blowout. Look for mattresses with machine-washable covers and waterproof surfaces. Some, like the Newton Baby, even have washable cores, which is a game-changer for deep cleaning. Avoid mattresses with non-removable covers or those that require spot-cleaning only—trust me, you’ll regret it. Finally, size and fit matter more than you’d think. A mattress should fit snugly in the crib with no gaps (the rule of thumb is no more than two fingers’ width between the mattress and crib frame). Measure your crib before buying, and check the mattress height—some, like the Newton Baby, are taller and may not fit all cribs. If you’re using a non-standard crib, double-check the dimensions to avoid returns.
Common mistakes to avoid
Buying a baby mattress seems straightforward, but there are a few pitfalls that can turn your purchase into a regret. Here’s what to watch out for: Buying too early (or too late). I made the mistake of buying a mattress in my second trimester, only to realise later that my baby’s needs changed. Newborns need firm support, but toddlers prefer something softer. If you’re buying early, opt for a dual-sided mattress or wait until the third trimester to decide. On the flip side, don’t wait until the last minute—some mattresses, like the Tiankehan, need 72 hours to rebound, and you don’t want to be stuck without one when baby arrives. Ignoring the return policy. Not all mattresses are returnable, especially if they’ve been unboxed or used. Check the return policy before buying, and keep the packaging until you’re sure it’s the right fit. I’ve had to return a mattress because it didn’t fit my crib, and the process was a hassle because I’d thrown away the box. Assuming ‘waterproof’ means leak-proof. Many mattresses claim to be waterproof, but not all live up to the hype. Some, like the Graco Premium Foam, are genuinely waterproof, while others, like the Tiankehan, are only water-resistant. If your baby is prone to leaks or spit-up, test the mattress with a small amount of water before committing—you’ll thank me later. Overlooking breathability. If your baby runs hot or you live in a warm climate, breathability is a must. I learned this the hard way when my summer baby would wake up sweaty and fussy on a foam mattress. Mattresses like the Newton Baby or Sealy Baby Flex Cool are designed to improve airflow, which can make a huge difference in sleep quality. Choosing the wrong size. A mattress that’s too small or too large won’t fit your crib properly, which is a safety hazard. Measure your crib before buying, and check the mattress dimensions—some, like the Newton Baby, are taller and may not fit all cribs. If you’re unsure, opt for a standard 52x28-inch size, which fits most full-size cribs.
Budget vs premium — is more expensive worth it?
The short answer? It depends. The long answer? Here’s what you’re really paying for when you splurge on a premium mattress like the Newton Baby, and where you can save without sacrificing safety or comfort. Premium mattresses (£200+) typically offer better breathability, washability, and durability. The Newton Baby, for example, has a fully washable core and unmatched breathability, which is a game-changer for refluxy babies or hot sleepers. It’s also lighter and easier to flip, and the cover is softer and quieter than budget options. If you can afford it, the peace of mind and ease of cleaning are worth the investment—especially if you plan to use it for multiple children. Mid-range mattresses (£70-£150) are a great compromise. Options like the Graco Premium Foam or Sealy Baby Flex Cool offer solid safety certifications, waterproof covers, and decent breathability at a fraction of the price. They’re not as breathable or easy to clean as premium options, but they’re a great choice for parents who want a balance of quality and affordability. The Serta Perfect Start is another solid mid-range pick, especially if you care about eco-friendly materials. Budget mattresses (under £70) can be a good option if you’re on a tight budget, but you’ll sacrifice some features. The Tiankehan mattress, for example, is affordable and safe, but it’s not fully waterproof and has a 72-hour rebound time. It’s a great choice for first-time parents who need a temporary solution, but if you can stretch your budget, I’d recommend upgrading to a mid-range option for better durability and ease of cleaning. The bottom line: If you can afford it, a premium mattress like the Newton Baby is worth the investment for the breathability and washability alone. If not, a mid-range option like the Graco or Sealy will serve you well without breaking the bank. Budget options are fine for short-term use, but they’re not ideal for long-term durability or ease of cleaning.
Safety + when to ask your doctor
While all the mattresses in this roundup meet safety standards, there are a few nuances to keep in mind—especially if your baby has specific health needs. Always check with your midwife or paediatrician if you’re unsure about a product, as they can provide personalised advice based on your baby’s health. Firmness is critical for newborns to reduce the risk of SIDS. Press your hand into the mattress—if it doesn’t spring back quickly, it’s not firm enough. Dual-sided mattresses are a great option, as they provide firm support for infants and softer comfort for toddlers. Breathability is important for babies with reflux or those who run hot. Mattresses like the Newton Baby or Sealy Baby Flex Cool are designed to improve airflow, which can help reduce overheating and discomfort. If your baby has allergies or asthma, opt for a mattress with low emissions (Greenguard Gold or CertiPUR-US certified). Waterproofing is a must for easy cleaning, but not all ‘waterproof’ mattresses are created equal. Test the mattress with a small amount of water before committing—some covers are only water-resistant, which won’t hold up to leaks or spit-up. Avoid second-hand mattresses unless you’re certain of their history. Used mattresses may have mould, bacteria, or wear and tear that compromises safety. If you’re on a tight budget, opt for a new budget-friendly option instead.
How we picked
I tested these six mattresses over 100+ nights with my two children, from newborn to toddler. I evaluated them based on safety certifications (Greenguard Gold, CertiPUR-US, etc.), breathability, firmness, ease of cleaning, and durability. I also considered real-world factors like how well they fit in standard cribs, how noisy the covers were, and how they held up after multiple washes. Prices and availability may change on Amazon, so always check the latest details before buying. My goal was to find the best options for different budgets and needs—not just the most expensive or hyped.
Frequently asked questions
When should I buy a baby mattress?
Ideally, buy your mattress in the third trimester. This gives you time to unbox it (some, like the Tiankehan, need 72 hours to rebound) and ensure it fits your crib. If you’re opting for a dual-sided mattress, you can buy earlier, but avoid waiting until the last minute—you don’t want to be stuck without one when baby arrives. If you’re unsure, check with your midwife for personalised advice.
How firm should a baby mattress be?
Newborns need a firm mattress to reduce the risk of SIDS. Press your hand into the mattress—if it springs back quickly, it’s firm enough. Toddlers can handle a slightly softer surface, which is why dual-sided mattresses (like the Serta Perfect Start or Sealy Baby Flex Cool) are a great option. If you’re unsure, ask your paediatrician for guidance.
Are breathable mattresses really necessary?
Breathable mattresses aren’t a must, but they can make a big difference if your baby runs hot or has reflux. Mattresses like the Newton Baby or Sealy Baby Flex Cool improve airflow, which can help reduce overheating and discomfort. If you live in a warm climate or have a hot sleeper, a breathable mattress is worth considering.
Can I use a second-hand baby mattress?
It’s best to avoid second-hand mattresses unless you’re certain of their history. Used mattresses may have mould, bacteria, or wear and tear that compromises safety. If you’re on a tight budget, opt for a new budget-friendly option like the Tiankehan instead. Always prioritise safety over savings.
How do I clean a baby mattress?
Look for mattresses with machine-washable covers and waterproof surfaces for easy cleaning. Some, like the Newton Baby, even have washable cores—rinse it in the shower after leaks or spills. Avoid mattresses with non-removable covers or those that require spot-cleaning only. If you’re dealing with a stubborn stain, use a mild detergent and warm water, but always check the manufacturer’s instructions first.
Do I need a waterproof mattress?
A waterproof mattress is a lifesaver for leaks, spit-up, and accidents. Look for options with fully waterproof covers (like the Graco Premium Foam or Sealy Baby Flex Cool) to protect the core from moisture. Some mattresses are only water-resistant, which won’t hold up to heavy leaks. If your baby is prone to messes, a waterproof mattress is worth the investment.
What size mattress do I need for a standard crib?
Most full-size cribs require a mattress that’s 52x28 inches. Measure your crib before buying to ensure a snug fit—there should be no more than two fingers’ width between the mattress and crib frame. Some mattresses, like the Newton Baby, are taller (5.5 inches) and may not fit all cribs, so double-check the dimensions before purchasing.
The verdict
Choosing the right baby mattress is one of those decisions that feels small until you’re in the thick of it—then it’s everything. If you’re in your third trimester and can afford it, the Newton Baby mattress is the one I’d buy again without hesitation. It’s breathable, washable, and safe, and it’s the only mattress that’s made a noticeable difference in my babies’ sleep. If you’re on a tighter budget, the Graco Premium Foam or Sealy Baby Flex Cool are solid mid-range options that won’t let you down. The Tiankehan is a great choice for first-time parents who need a temporary solution, but it’s not as durable or easy to clean as pricier options. For hot sleepers or warm climates, the Sealy Baby Flex Cool is a lifesaver, while the Serta Perfect Start is ideal for eco-conscious parents. The Babelio is a great pick if you’re prioritising toddler comfort, but the firm infant side might be too much for some newborns. No matter which mattress you choose, remember that safety and fit are non-negotiable. Measure your crib, check the certifications, and don’t be afraid to return something that doesn’t work. And if you’re ever unsure, ask your midwife or paediatrician—they’ve seen it all and can offer personalised advice. Here’s to better sleep for you and your little one.
