Serta SleepTrue Sparkling Sky Dual-Sided Crib & Toddler Mattress
The Serta SleepTrue Sparkling Sky Dual-Sided Crib & Toddler Mattress weighs 8.5 lb and is 5 in thick, per Serta (made by Delta Children). A 5 inch, 8.5 pound flippable fiber-core mattress with a removable machine-washable cover and waterproof encasement.
- $89.99List price
- 5 inThickness
- 8.5 lbWeight
- FiberCore
How the SleepTrue Sparkling Sky 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 SleepTrue Sparkling Sky apart
Measured against the 82 two-stage crib mattresses we compare, from each maker's published specs.
- Weight: 8.5 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
- Storkcraft 6-Inch Dual-Sided Baby Crib & Toddler Bed MattressNext to it, the SleepTrue Sparkling Sky is 1 in thinner; $10 less.
- Simmons Kids Silver Nights Dual Sided 2-Stage Crib and Toddler MattressNext to it, the SleepTrue Sparkling Sky is $10 more.
Fit check
| Size, per the maker | 52 × 27.5 × 5 in |
|---|---|
| Sides | Two-stage, per the maker |
Crib types on Cribpicks that take a full-size crib mattress:
Listed features
- Light
- Removable machine-washable cover
- Waterproof encasement
Where to buy the SleepTrue Sparkling Sky
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
| Serta (made by Delta Children) SleepTrue Sparkling Sky | |
|---|---|
| Type | Two-stage crib mattress |
| List price | $89.99 |
| Size | 52 × 27.5 × 5 in |
| Thickness | 5 in |
| Weight | 8.5 lb |
| Core | Fiber: firm core made from recycled bottles |
| Two-stage | Yes, infant and toddler sides |
| Waterproof | Yes |
| Washable cover | Yes |
| Breathable design | Yes, per the maker |
| Certifications | GREENGUARD Gold, JPMA certified |
| Warranty | 7 year limited |
| Made in | USA of imported and domestic parts |
Compare the SleepTrue Sparkling Sky with
How each closest rival differs from the SleepTrue Sparkling Sky, from the makers' specs.
- Delta ChildrenRefresh 2-Stage Crib and Toddler Mattress8.5 lb5 in thick$89.99Compare side by side
- Storkcraft6-Inch Dual-Sided Baby Crib & Toddler Bed Mattress8.5 lb6 in thick$99.99
- 1 in thicker
- $10 more
- Simmons KidsSilver Nights Dual Sided 2-Stage Crib and Toddler Mattress8.5 lb5 in thick$79.99
- $10 less
- Serta (made by Delta Children)Perfect Slumber Dual Sided Recycled Fiber5 in thick$79$79.99
- $10 less
SleepTrue Sparkling Sky: questions answered
From Serta (made by Delta Children)'s published specs, last checked 2026-11-02.
Will the Serta SleepTrue Sparkling Sky Dual-Sided Crib & Toddler Mattress fit my crib?
The maker lists it at 52 × 27.5 × 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 Serta SleepTrue Sparkling Sky Dual-Sided Crib & Toddler 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 Serta SleepTrue Sparkling Sky Dual-Sided Crib & Toddler Mattress made of?
Firm core made from recycled bottles. The maker lists GREENGUARD Gold, JPMA certified. It weighs 8.5 lb, which matters when you change sheets.
Is the Serta SleepTrue Sparkling Sky Dual-Sided Crib & Toddler Mattress waterproof or washable?
The maker says it has a waterproof surface or cover. It has a removable, machine-washable cover.
Still wondering? Write to us at hello@cribpicks.com and we'll look it up.
More two-stage crib mattresses
- Sealy Baby2Cool Breathable Cooling (EM026)9 lb4.5 in thick$109.99
- Dream On MeCarousel Firm Fiber 6" Crib and Toddler Bed Mattress6 lb6 in thick$83.99
- Dream On MeLittle Butterflies 6 Inch Foam Core Crib and Toddler Bed Mattress6 lb6 in thick$83.99
- Dream On MeAirNest 2 in 1 Premium Crib Mattress5 lb5 in thick$89.99
- Sealy Baby (Kolcraft)Everlite Airy Polyfiber 2-Stage (EM005)5 in thick$109$109.99
- Sealy BabyOmni-Breathe (EM023)6.8 lb4.5 in thick$109.99
Where these specs come from
Last checked 2026-11-02. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.