GROWS WITH BABY: Dual-sided crib mattress features a firm infant side (0–12 months) and a cushioned toddler side (12 months+), providing long-lasting comfort, proper support, and a safe sleep surface as your baby transitions from newborn to toddler stage. EASY-CARE COMFORT: Protects against leaks and messes with a water-resistant surface. Removable, machine-washable cover keeps your baby’s sleep space fresh and hygienic. MATTRESS IN A BOX: Ships rolled and compressed for easy delivery. Unbox, unroll, and allow up to 72 hours to fully expand to its 5” height. For best results, open within 2 weeks and let it expand on a flat surface before placing in the crib. CERTIFIED SAFE: GREENGUARD Gold Certified and Baby Safety Alliance Verified, this mattress meets ASTM and CPSC safety standards and is tested for low emissions and screened against over 10,000 chemicals to help support a cleaner, healthier sleep environment for your baby. PERFECT FIT & BUILT TO LAST: Measures 52” L x 28” W x 5” H to fit standard full-size cribs and toddler beds, creating a snug and secure sleep surface. Crafted with durable foam construction and backed by a 7-Year Limited Manufacturer’s Warranty for lasting support.