Helps heal & prevent blisters. Thin & flexible to conform to foot. Clear & discreet. Water-resistant. Sterile cushions. Designed to stay on all day. Helps Heal and Prevent Blisters: Cushion protects from friction and pressure; thin and flexible to conform to the heel and other areas of the foot; stays comfortably in place; sterilized for safe use on open blisters; water-resistant. drscholls.com. Clear cushion. Product of Belgium.