Antibacterial, waterproof lock stitched binding helps prevent mold, mildew and odor from seeping inside like cotton binding allows., Dimensions: 37.5'x25.5'X3", This product is intended to be use from 6 months and up., Please ensure mattress is will fitted in play yard without any gaps around parameter., Passes all Flammability tests (16 CFR 1632 /1633) without the use of flame retardants and also pass phthalate, lead and toxicity tests, Vinyl 10%/ Foam 90%, Bacterial waterproof cover that wipes clean, Complies with 16-CFR 1633 standards, Ships in Certified Frustration-Free Packaging, Dimensions: 25.5"x 37.5"x 3"