Your child will spend most of his early life in his crib; make sure to get the right one from the start! Experts recommend getting a spring mattress. Although more expensive than your typical foam mattress, spring mattresses offer better support for soft, growing bodies, will last much longer, and offers better ventilation. • Heavy gauge steel coils provide firm support, durability and dissipate heat more efficiently. • Waterproof cover wipes clean with a damp cloth for easy maintenance. • PVC / Vinyl free waterproof cover • Fits all U.S. Standard-sized cribs and toddler frames • Mattress dimensions: 52" x 28" x 6" thick