multi-layered, high density foam for optimal pressure redistribution. Top layer of foam is high resilient and die-cut. Ultra-soft heel section provides extremely low skin interface pressure. Mattress cover is 2-way stretch, water resistant, vapor permeable nylon and hygiene has a low moisture transmission. Meets fire code 1633.  #15887-36x76  #15888-80x36  #15885-84x36   UNSPSC#42191810