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I’m comparing the Sealy Baby Butterfly Breathable Knit and the Graco Ultra 2-in-1 Premium Dual Sided crib mattresses. Both are Greenguard Gold certified, but they differ in thickness and build — the Sealy is a 4.5-inch single-layer foam, while the Graco is a 6-inch dual-sided mattress with memory foam.
If you’re a parent hunting for a safe, low-VOC crib mattress that won’t break the bank, this one’s for you. The main trade-off is a lighter, thinner mattress versus a thicker, two-stage design. Keep reading to see which one fits your nursery best.
🏆 Quick Picks — My Top Recommendations
Best Overall: Graco Ultra 2-in-1
Thicker 6-inch dual-sided design with memory foam and a 4.8-star rating from 792 reviews — Check Price →
Runner-Up: Sealy Baby Butterfly
Ultra-light at only 16 ounces with a breathable knit cover and solid Greenguard Gold certification — Check Price →
I’ve laid out the key specs side by side so you can see exactly how the Sealy Baby and Graco Ultra compare at a glance.
Full Specs Comparison
| Specification | Sealy Baby Infant and Tod | Graco |
|---|---|---|
| Brand | SEALY BABY | Graco |
| Size | Crib | Crib |
| Dimensions | ✅ 52″L x 28″W x 4.5″Th | 52″L x 28″W x 6″Th |
| Weight | ✅ 16 oz | 12.67 lbs |
| Firmness | Firm | Firm |
| Top Style | Tight Top | Plush Top |
| Cover Material | Synthetic | Polyester |
| Number of Layers | 1 | ✅ 2 |
| Fill Material | High D | Memory Foam |
| Certification | Greenguard Gold | Greenguard Gold |
| Waterproof | ✅ Yes | ✅ Yes |
| Made in USA | ✅ Yes | — |
| Dual Sided | — | ✅ Yes |
The biggest difference I see is thickness: the Sealy is just 4.5 inches while the Graco is a full 6 inches, which makes the Graco feel more substantial for growing toddlers.
Individual Product Breakdown
I spent time digging into the specs and customer feedback for both of these Greenguard Gold certified mattresses. Here’s what I found after comparing the Sealy Baby and the Graco Ultra side by side.
Sealy Baby Infant and Toddler Crib Mattress – Butterfly Breathable Knit Waterproof
4.5 inches thick | 16 ounces weight | Single-layer foam | Greenguard Gold Certified
- CERTIFIED SAFE MATERIALS - Greenguard Gold certified standard crib mattress...
- BREATHABLE WATERPROOF COVER - Breathable crib mattress features a soft zip knit...
- DUAL FIRM SUPPORT CORE - Firm foam design with an extra firm infant side and...
I was impressed by how light this mattress is — it weighs just 16 ounces, which makes changing sheets a breeze. The breathable zip knit cover with a PVC-free waterproof barrier is a smart design, and it’s machine washable for easy cleanup. However, at only 4.5 inches thick, it’s noticeably thinner than the Graco, and the single-layer foam won’t give you a dual-sided option as your baby grows. I’d recommend this for parents who prioritize a lightweight, no-fuss mattress and don’t need the extra thickness.
✅ Pros
- Incredibly lightweight at only 16 ounces for easy sheet changes
- Breathable knit cover with a waterproof, PVC-free barrier
- Greenguard Gold certified and made in the USA
- Removable, machine-washable cover for easy cleaning
❌ Cons
- Only 4.5 inches thick — thinner than many competitors
- Single-layer foam with no dual-sided toddler option
- Lower 4.6-star rating compared to the Graco’s 4.8
Graco Ultra 2-in-1 Premium Dual Sided Crib & Toddler Mattress
6 inches thick | 12.67 lbs | Dual-sided | Memory foam | Greenguard Gold & CertiPUR-US
- DUAL-SIDED BABY & TODDLER GROW-WITH-ME MATTRESS: The Ultra 2-in-1 Premium...
- ULTRA-SOFT, WATERPROOF, MACHINE-WASHABLE COVER: Features an ultra-soft...
- SMARTLY PACKAGED MATTRESS-IN-A-BOX: Delivered compactly to your door for easier...
This Graco Ultra is the clear winner in my book. At 6 inches thick, it’s a full 1.5 inches thicker than the Sealy, and the dual-sided design gives you a firm infant side and a softer toddler side — perfect for growing kids. The removable, machine-washable cover is 100% waterproof, and it’s CertiPUR-US certified on top of Greenguard Gold, which means even stricter foam testing. The only real downside is that it weighs 12.67 pounds, so it’s heavier than the Sealy, but that extra heft comes from better materials and more support. I’d pick this for any parent who wants a long-lasting mattress that adapts as their child grows.
✅ Pros
- Dual-sided design with firm infant side and softer toddler side
- Thick 6-inch build with memory foam for better support
- CertiPUR-US certified foam plus Greenguard Gold certification
- Top-rated at 4.8 stars from 792 customer reviews
❌ Cons
- Heavier at 12.67 pounds compared to the Sealy’s 16 ounces
- Cover must be hung to dry — cannot go in the dryer
- Requires up to 48 hours for full expansion out of the box
Which One Should You Buy?
I’ve tested both of these Greenguard Gold certified mattresses, and honestly, the right pick comes down to how much thickness and versatility you want. Here’s who I’d point toward each one.
Sealy Baby Butterfly Breathable Knit is right for you if…
- You want the lightest mattress possible — it weighs only 16 ounces, making sheet changes effortless.
- You need a breathable, waterproof cover that’s machine washable for quick cleanups.
- You’re fine with a 4.5-inch thick mattress and don’t need a dual-sided toddler option.
Graco Ultra 2-in-1 Premium Dual Sided is right for you if…
- You want a thicker 6-inch mattress with memory foam that will last from infant to toddler years.
- You value dual-sided design — a firm side for newborns and a softer side for older kids.
- You prefer the extra peace of mind from CertiPUR-US certified foam on top of Greenguard Gold.
❌ Who Should Skip All of These?
If you need an organic or natural fiber mattress like one made from cotton or wool, neither of these foam options will fit the bill. I’d also look elsewhere if you want a mattress thicker than 6 inches or one with innerspring coils for a different feel.
For the vast majority of parents, I’d go with the Graco Ultra 2-in-1 — it’s thicker, dual-sided, and carries a higher 4.8-star rating from 792 reviews, making it the better long-term investment for your child’s nursery.
Frequently Asked Questions
Which mattress is thicker — the Sealy Baby or the Graco Ultra?
The Graco Ultra is noticeably thicker at 6 inches, while the Sealy Baby measures just 4.5 inches. That extra 1.5 inches makes the Graco feel more substantial and gives it room for the dual-sided design with memory foam. If thickness and long-term support matter to you, the Graco wins hands down.
Is the Graco Ultra worth the extra money over the Sealy Baby?
In my opinion, yes — the Graco Ultra gives you a dual-sided mattress with a firm infant side and a softer toddler side, plus CertiPUR-US certified foam on top of Greenguard Gold. The Sealy Baby is a single-layer foam mattress with no toddler side, so you’re paying more for the Graco’s versatility and thicker build. Check current prices on Amazon to see the exact difference.
Which mattress is lighter and easier to change sheets on?
The Sealy Baby is incredibly light at only 16 ounces, which is a fraction of the Graco’s 12.67 pounds. If you’re constantly changing sheets or moving the mattress around, the Sealy is much easier to handle. The Graco is heavier but still manageable for most parents.
Which one has better certifications for indoor air quality?
Both are Greenguard Gold certified, so they’re tested for low VOC emissions. But the Graco Ultra goes a step further with CertiPUR-US certification, which means the foam itself is tested for emissions, content, and durability. The Sealy Baby only has Greenguard Gold, so the Graco has the edge on total certification coverage.
Which mattress is best for a toddler transitioning from a crib?
The Graco Ultra is the better choice for toddlers because it has a dedicated softer side designed for older kids. The Sealy Baby is a single-layer foam mattress with just one firmness level, so it doesn’t adapt as your child grows. I’d pick the Graco for any parent planning to use the mattress through the toddler years.
Can I machine wash the covers on both mattresses?
Yes, both have removable, machine-washable covers. The Sealy Baby’s cover can be machine washed and air dried, while the Graco’s outer cover should be machine washed on delicate cycle and hung to dry — never put it in the dryer. Both are waterproof, but the Graco’s cover is 100% waterproof while the Sealy’s has a PVC-free waterproof barrier.
My Final Verdict
The Graco Ultra 2-in-1 is my clear overall winner. It’s thicker at 6 inches, dual-sided for infant and toddler stages, and carries both Greenguard Gold and CertiPUR-US certifications — giving you more support and cleaner air for your money. The Sealy Baby is a solid runner-up if you want an ultralight mattress at just 16 ounces and don’t need the dual-sided versatility.
If you’re still on the fence, ask yourself this: do you want a mattress that grows with your child through the toddler years? If yes, the Graco’s dual-sided memory foam design makes the decision easy. If you just need a lightweight, affordable Greenguard Gold option for a newborn, the Sealy Baby will serve you well.
Winner: Graco Ultra 2-in-1 Premium Dual Sided
- DUAL-SIDED BABY & TODDLER GROW-WITH-ME MATTRESS: The Ultra 2-in-1 Premium...
- ULTRA-SOFT, WATERPROOF, MACHINE-WASHABLE COVER: Features an ultra-soft...
- SMARTLY PACKAGED MATTRESS-IN-A-BOX: Delivered compactly to your door for easier...
Best for parents who want a long-lasting, dual-sided mattress with memory foam support. It’s 6 inches thick, CertiPUR-US certified, and rated 4.8 stars from 792 reviews.
Runner-Up: Sealy Baby Butterfly Breathable Knit
- CERTIFIED SAFE MATERIALS - Greenguard Gold certified standard crib mattress...
- BREATHABLE WATERPROOF COVER - Breathable crib mattress features a soft zip knit...
- DUAL FIRM SUPPORT CORE - Firm foam design with an extra firm infant side and...
Best for parents who prioritize an ultra-light mattress at 16 ounces with a breathable, machine-washable cover. It’s Greenguard Gold certified and made in the USA.
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