Crestgolf Foam Sponge Practice Ball 12 pcs per bag a solid core of cross-linked creates enough weight(8grams) for limited distance performance while remaining soft enough for backyard practice Color is clear, colourful, lovely modelling, durable, good elasticity and the use of safe, soft comfortable products, men and women, old and young all appropriate, suitable for use in golf swing. the balls compresses slight upon impact just like a real golf ball, giving it real "pop" off the club face and long-lasting durablility,but because of its special core construction, it is extremely soft, making it backyard safe 12pcs per bag