The L.a. Baby 2-in-1 dual-sided crib mattress features a firm infant side for better support, and a toddler side with double Usda certified cotton layers for added comfort. Deluxe Jacquard fabric cover is 100% waterproof, phthalate free, non-allergenic, stain resistant, and easy to clean. 182 heavy-duty 15.5 gauge steel coils provide maximum durability and support for baby's developing spine. Air vents promote mattress freshness cloth binding prevents edge seam splitting. Proudly made in the Usa from domestic and imported materials.