Description Provide maximum comfort and protection using The Dynamic Elite Pressure Redistribution 6500 Foam Mattress by Drive Medical. It is enveloped in a two-layer cover. The top cover is a two-way stretch fabric that will reduce heat build-up and provide a low shear surface that is anti-microbial and water-resistant. The bottom layer is completely vinyl. It will be fully waterproof on the bottom and will prevent staining. The cover zipper is concealed and has a flap that goes over the opening to prevent liquids from getting inside the mattress core.h assist in stability and transfer out of bed.