The special rubber blend is soft, pliable, and waterproof. It stretches to fit both recurve bow tips and longbow tips. Just slide it on and watch as it conforms to the shape of your bow. Protects from scuffs and scratches and holds the lower string loop in place. Get one for each of your bows. A good rubber tip protector is an inexpensive way to keep your bow in tip-top shape. Starts 3/4" wide opening. Conforms to the shape of your bow tip when you apply heat (we have used a blow dryer with success).