
Delta Children Serta SleepTrue Mini
Score: 72/100
Dream On Me Zzz Gold
Score: 77/100Rankings

The Dream On Me Baby Zzz 5" full-size mattress combines a breathable foam core with a washable, water-resistant cover for easy care. Its main limitation is the 24-72 hour expansion period and some confusion around warranty terms. Best for families needing a lightweight, certified mattress that ships compactly.

The Delta Children Serta SleepTrue Mini Crib Mattress delivers a firm, lightweight 4-inch profile with a waterproof vinyl cover and sustainable fiber core. Its thinness and absence of breathable cover may not satisfy parents wanting extra cushioning. Perfect for portable mini cribs where weight and exact fit are priorities.
| Attribute | ![]() | ![]() |
|---|---|---|
38 inches | 52 inchesbest | |
24 inches | 28 inchesbest | |
4 inches | 5 inchesbest | |
| ↓ lower better | 3.9 lbbest | 13.5 lb |
4best | 4best | |
1 years | 7 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Dimensions(3) | ||
Length (inches) | 38 inches | 52 inches |
Width (inches) | 24 inches | 28 inches |
Height (Thickness) (inches) | 4 inches | 5 inches |
Safety & Certifications(1) | ||
Certifications | GREENGUARD Gold, JPMA, ASTM/CPSC, CPSIA | Greenguard Gold; JPMA; CertiPUR-US; Federal Flammability Standards |
Warranty(1) | ||
Warranty Period (years) | 1 years | 7 years |
Physical Specs(3) | ||
Weight (lb) | 3.9 lb | 13.5 lb |
Cover Material | waterproof vinyl | Polyester, machine-washable, water-resistant, stain-resistant, hidden zipper |
Foam Type | fiber | Breathable Foam |
Features(1) | ||
Waterproof | true | false |

Products in the top-left offer the best value (high score, low price).

Professional editors highlight the mattress's compliance with GREENGUARD Gold, JPMA and ASTM/CPSC standards, emphasizing its low chemical emissions and safety for infant sleep, while noting its lightweight construction as a key advantage for portable setups.
Everyday users consistently praise the mattress's ultra-light weight, exact mini-crib fit, and firm support, but some express concerns about the thinness and occasional snug fit in cribs that are marginally shorter than the stated dimensions.



Pros: Plush yet firm breathable foam provides pediatrician-recommended support for infants and toddlers; Machine-washable, water-resistant polyester cover with hidden zipper simplifies cleaning and protects against spills; Greenguard Gold and JPMA certifications ensure low VOC emissions and compliance with safety standards; Lightweight (13.5 lb) and compressed in-box design makes shipping and storage convenient; Fire-proof fiber core meets Federal Flammability Standards for added safety. Cons: Requires 24-72 hours to fully expand after unpacking, delaying immediate use; Compressed delivery may result in temporary uneven surface if not allowed sufficient time to regain shape; Warranty information varies across sources, with some listing only a 30-day limited warranty; Potential risk of loose bedding hazards as warned by CPSC, requiring additional bedding precautions.