Durable rubber rope *6m, diameter 0.2 inch (4 mm), 1.6 ft (6 m) without damage and can be cut to desired length.Strong elasticity! It is super elastic and durable, and will not break even after repeated use.Surface: Polyester (thread is polyester so it drains well, and has been firmly made with stretch) Interior: 40 pieces of grade A natural rubber (carbon core is very durable rubber); Strong 2-hole spring cord stoppers x 6, measuring 0.8 x 0.9 inches (21 x 22.5 mm), hole 0.2 inch (6 mm), 0.2 inch (4 mm) elastic cord.Plastic 2-hole cord lock is convenient to lock cords.Wide Application