These Foam balls are virtually indestructible and are strung on a durable 1inch OD Biothane handle. The balls material is soft and safe in dogs' mouths, have a great bounce, and float in water for fun fetching anywhere! The handle helps you launch the ball farther than when thrown by hand and allows for tug play and is made of a leash like 1inch biothane. The LARGE ball is 4 inches wide and have an 18 inch long, 1 inch with OD colored biothane handle.