Sealy Posture Haven 2-Stage Crib Mattress
The Sealy Posture Haven 2-Stage Crib Mattress weighs 13.4 lb and is 5.5 in thick, per Sealy Baby (Kolcraft). A 182-coil two-stage mattress with a firmer infant side, a softer flip side for toddlers and a wipe-clean waterproof cover.
- $109.99List price
- 5.5 inThickness
- 13.4 lbWeight
- InnerspringCore
How the Posture Haven 2-Stage (EM444) stacks up
Against the 82 two-stage crib mattresses we track. The shaded band is where the middle half of them fall; the dot is this one.
Within the typical range for two-stage crib mattresses (7.5 lb to 14 lb).
Within the typical range for two-stage crib mattresses (5 in to 6 in).
Within the typical range for two-stage crib mattresses ($89.99 to $189.99).
What sets the Posture Haven 2-Stage (EM444) apart
Measured against the 82 two-stage crib mattresses we compare, from each maker's published specs.
- Weight: 13.4 lbin the middle half of the 69 two-stage crib mattresses that publish it (7.5 lb to 14 lb)
Next to its closest matches
- Sealy Baby (Kolcraft) Celestial Cool Antibacterial 2-Stage Hybrid (EM460)Next to it, the Posture Haven 2-Stage (EM444) is 0.6 lb lighter.
- Sealy Baby (Kolcraft) Prestige Sleep 2-Stage Antibacterial (EM461)Next to it, the Posture Haven 2-Stage (EM444) is 1.2 lb heavier.
- Sealy Baby (Kolcraft) Posture Perfect Hybrid 2-Stage (EM375)Next to it, the Posture Haven 2-Stage (EM444) is 1.2 lb lighter; 0.3 in thinner.
Fit check
| Size, per the maker | 51.63 × 27.25 × 5.5 in |
|---|---|
| Sides | Two: a firmer infant side and a toddler side, per the maker |
Crib types on Cribpicks that take a full-size crib mattress:
Listed features
- 182 coils
- Lifetime warranty
- Low price for a coil mattress
Worth checking
- 13.4 lb
- Wipe clean only
Where to buy the Posture Haven 2-Stage (EM444)
Prices and availability change. We may earn a commission from some links.
- Check for recalls: Search the agency's recall list with the model number and date code from the label: CPSC recall search.
- Safe sleep: see the AAP's guide to safe sleep and NICHD Safe to Sleep. Check the label and the maker's instructions, and ask your pediatrician about your child.
Full specs
| Sealy Baby (Kolcraft) Posture Haven 2-Stage (EM444) | |
|---|---|
| Type | Two-stage crib mattress |
| List price | $109.99 |
| Size | 51.6 × 27.3 × 5.5 in |
| Thickness | 5.5 in |
| Weight | 13.4 lb |
| Core | Innerspring: 182 posture supportive coils |
| Coils | 182 |
| Two-stage | Yes, infant and toddler sides |
| Firm for infants | Yes, per the maker |
| Waterproof | Yes |
| Washable cover | No |
| Certifications | GREENGUARD Gold |
| Warranty | Lifetime, workmanship and materials |
| Made in | USA (US and imported parts) |
Compare the Posture Haven 2-Stage (EM444) with
How each closest rival differs from the Posture Haven 2-Stage (EM444), from the makers' specs.
- Sealy Baby (Kolcraft)Celestial Cool Antibacterial 2-Stage Hybrid (EM460)14 lb5.5 in thick$109.99
- 0.6 lb heavier
- Sealy Baby (Kolcraft)Prestige Sleep 2-Stage Antibacterial (EM461)12.3 lb5.5 in thick$109.99
- 1.2 lb lighter
- Sealy Baby (Kolcraft)Posture Perfect Hybrid 2-Stage (EM375)14.6 lb5.8 in thick$109.99
- 1.2 lb heavier
- 0.3 in thicker
- Sealy Baby (Kolcraft)Posturepedic Evolution 2-Stage (EM612)14.7 lb5.8 in thick$129.99
- 1.3 lb heavier
- 0.3 in thicker
- $20 more
Posture Haven 2-Stage (EM444): questions answered
From Sealy Baby (Kolcraft)'s published specs, last checked 2026-11-02.
Will the Sealy Posture Haven 2-Stage Crib Mattress fit my crib?
The maker lists it at 51.63 × 27.25 × 5.5 in, a full-size crib mattress. Check that the mattress size matches what your crib's maker specifies. Safe sleep: see the AAP's guide to safe sleep and NICHD Safe to Sleep. Check the label and the maker's instructions, and ask your pediatrician about your child.
How does a two-stage mattress like the Sealy Posture Haven 2-Stage Crib Mattress work?
One side is firmer for infants and the other is softer for toddlers. Follow the maker's instructions on when to switch sides. Safe sleep: see the AAP's guide to safe sleep and NICHD Safe to Sleep. Check the label and the maker's instructions, and ask your pediatrician about your child.
What is the Sealy Posture Haven 2-Stage Crib Mattress made of?
182 posture supportive coils, with 182 coils. The maker lists GREENGUARD Gold. It weighs 13.4 lb, which matters when you change sheets.
Is the Sealy Posture Haven 2-Stage Crib Mattress waterproof or washable?
The maker says it has a waterproof surface or cover. The cover is not removable for washing.
What's the difference between the Sealy Posture Haven 2-Stage Crib Mattress and the Sealy Celestial Cool Antibacterial 2-Stage Hybrid Crib Mattress?
By the maker specs, the Posture Haven 2-Stage (EM444) is lighter (13.4 vs 14 lb). See them side by side.
Still wondering? Write to us at hello@cribpicks.com and we'll look it up.
More two-stage crib mattresses
- Sealy Baby (Kolcraft)Posturepedic Grow 2-Stage (EM610)14.7 lb5.8 in thick$129.99
- Sealy Baby (Kolcraft)Cozy Rest 2-Stage (EM255)5.3 in thick$99$99.99
- Dream On Me2 in 1 Breathable 150 Ultra Coil Inner Spring Standard Crib & Toddler Mattress11.5 lb6 in thick$79.99
- EvolurSleep Comfort Balance Plus Supreme 260 Coil Inner Spring Crib and Toddler Mattress10 lb6 in thick$89.99
- Sealy BabyFlexCool 2-Stage (EM443)5.8 in thick$129$129.99
- Sealy Baby (Kolcraft)Brilliant Nights 2-Stage (EM442)5.5 in thick$129$129.99
Where these specs come from
Last checked 2026-11-02. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.