Convatec Stomahesive® Skin Barrier without Starter Hole 4" L x 4" W Size Square Shape Non-Sterile, Latex FreeA multi-purpose skin barrier designed to help protect peristomal skin. Gentle on skin holds firmly to skin surface. Available in sterile and non-sterile forms.A multipurpose skin barrier designed to help protect the skin around your stoma and assist in the management of difficult stomas.