2-in-1 dual sided design – The infant side is firmer and provides better support. The toddler side features double USDA certified Organic Cotton layers for enhanced comfort. Deluxe Jacquard fabric cover is 100% waterproof, anti-microbial, phthalate free, non-toxic, non-allergenic, stain resistant and Easy to keep clean.182 heavy duty 15.5 gauge steels coils provide maximum durability and support to baby's developing spine. 9 Gauge border rods and Flex Edge Clips offer extra strength and support. Air-vents help keep mattress fresh. Fits all standard size cribs and toddler beds. Size: 52" x 27.5" x 5.75”Proudly made in the U.S.A. from domestic and imported sources. 25 year warranty.