
Sealy Baby OptiCool
Score: 78/100
Delta Children Twinkle Stars
Score: 81/100Rankings

Delta Children's Miles 4-in-1 Convertible Crib mattress offers GREENGUARD Gold certification, waterproof hypoallergenic encasement, and a reversible 2-stage design for extended use. Availability is limited as the product is discontinued and the toddler guardrail must be purchased separately. Ideal for families seeking a certified, waterproof mattress that can grow with the child.

The Sealy Baby OptiCool offers a lightweight, dual-sided foam design with a cooling gel toddler surface and a waterproof breathable cotton cover. Its 60-lb weight limit and all-foam construction may limit durability for larger toddlers. Best suited for families prioritizing portability and GREENGUARD-certified comfort.
| Attribute | ![]() | ![]() |
|---|---|---|
51.63 inches | 52 inchesbest | |
27.25 inches | 27.5 inchesbest | |
5.25 inchesbest | 5 inches | |
| ↓ lower better | 6.49 lbbest | 8.5 lb |
2best | 2best | |
— | 7 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Dimensions(3) | ||
Length (inches) | 51.63 inches | 52 inches |
Width (inches) | 27.25 inches | 27.5 inches |
Height (Thickness) (inches) | 5.25 inches | 5 inches |
Safety & Certifications(1) | ||
Certifications | GREENGUARD GOLD, CertiPUR-US | GREENGUARD Gold; JPMA |
Physical Specs(2) | ||
Weight (lb) | 6.49 lb | 8.5 lb |
Foam Type | Cool gel memory foam | fiber |

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

Professional sources note that the EM822-GTS1 earned the 2020 Cribsie Award for healthiness and is part of Sealy's leading crib mattress portfolio, underscoring its safety certifications, hypoallergenic materials, and market acceptance, though detailed performance reviews are lacking.

