Highly Absorbent Foam: Made of highly absorbent polyurethane foam for effective wound management. Non-Adhesive Covering: Biatain non-adhesive dressing provides pain-free removal. Waterproof Backing: Effectively absorbs and retains wound exudate to promote a moist healing environment. Sterile Dressing: Square-shaped dressing is sterile and safe for hygienic wound care. 4x4-inch Size: Provides coverage for moderate to high exuding wounds.