Medline Industries Wytex Undercast Padding 4" x 4yds, Sterile, Low Linting, Latex-freeWytex Under cast Padding: This product is constructed of 100% pure cotton fibers to provide a soft environment under a hard cast. Wytex is a low linting product with more loft to provide a better feel for the patient.Wytex is a low linting product with more loft to provide a better feel for the patient.