Made of EVA Sponge Material: Sweat absorbing, deodorant, moisture-proof and environment-protective. It is soft and comfortable for holding. Anti-dust Bearing: 360°low noise rotation, durable and stable, smooth swing without twine. Bold PVC with embedded wire rope: Durable and reliable in use, effectively improve your jump rope speed. Adjustable Rope Length: The rope length can be adjusted according to your need that can improve your sense of use. Maximum Comfort: Scientific design with light weight ergonomic handles can improve your comfortable sense when you are doing sports. Smooth and Fast: The ball bearing system avoids twisting, tangling or bending that make you skip more easier. Suitable for simming, working out, train and entertainment.This adjustable jump rope can effectively help you work out and portray perfect figure.