1 3/4" x 3/8" (100 per Box) First Aid brand closures are latex free, sterile and waterproof that adheres firmly to hold wound edges together. The American White Cross First Aid brand butterfly closures are latex free, sterile and waterproof. They will secure and reinforce small cuts and wounds. These butterfly closures have a non-adherent film center that will not stick to wounds. The unique, long lasting adhesive helps keep the bandage in place. These butterfly closures are great for any clinic or first aid cabinet.