50% Nylon, 50% Vinyl PACK OF 16 DAYCARE COTS: After long hours of play or learning, these cots ensure a comfortable napping surface for preschoolers and sleepy toddlers, making them great for classrooms, daycare centers, or any room in your home STACKABLE AND PORTABLE: Copolymer corners on each cot nest together tightly to allow you to neatly stack them up to 24 high, and rolling casters (sold separately) can be attached to the bottom of the cots to simplify set up and clean up EASY TO CLEAN: Durable, non-flammable mesh fabric with a vinyl coating makes clean-ups a breeze - simply scrub the cot with a damp soapy sponge and wipe it dry HEAVY-DUTY CONSTRUCTION: Sturdy 18-gauge steel frame withstands years of heavy-duty use and supports up to 150 lbs.; cots are backed by a 20-year warranty STANDARD SIZE COTS: Each Greenguard Gold Certified children's cot is easy to assemble and measures 52 L x 23 W x 5 H to fit neatly in classrooms or homes without taking up too much space