BSN Medical 6884 Delta-Rol 4 in x 4 yds Cast Padding, Synthetic adds comfort underneath a cast. Its made with synthetic acrylic fibers that wont absorb and retain moisture. This is important in helping maintain healthy skin and wont cause skin maceration from moisture build-up. Its also latex-free to not cause skin irritation for individuals with a latex allergy. The roll wraps around a limb easily and stretches as needed when trying to narrow the padding to cover smaller regions without needing scissors to cut to size.