2-Stage spring less design: firmer infant side & softer toddler side; 204-heavy gauge steel coils for premium firmness … The Sealy Flex Cool 2-Stage Airy Infant and Toddler Crib Mattress offers a firmer infant side and a softer toddler side for 2 stages of comfort for baby. PRODUCT FEATURES. This high coil count crib mattress features 204 heavy gauge steel coils offer premium firmness … With dual-sided options, this snug foundation boasts a firm side for your infant that reverses to a lightweight, airy … With a high coil count for firmness and airy foam later for support, this Sealy crib mattress offers you little one a peaceful night's rest. Provide your little one with premium comfort courtesy of the Sealy FlexCool 2-Stage Airy Crib Mattress. The Sealy FlexCool 2-Stage Crib & Toddler Mattress offers a firmer infant side with durable steel coils to create a firm sleeping foundation, while the softer toddler side offers a lightweight, airy cushioning that …