The outer layer of the golf ball part is DuPont Surlyn, while the inner layer is synthetic rubber. It is not easy to break, and deform or rust. Golf bottle cap opener is a great supply for golf themed bars, parties, carnivals, barbecues, family dinners due to its interesting and distinctive appearance.Golf beer bottle opener has hardness and can be used for a long timing. Its interesting and non-slip handle design can bring you a lot-of convenience.As a delicate gift, beer opener golf themed is a novel and practical gift for your friend, father, boyfriend, relatives, colleagues and also other golf lover.