1. 【Strong Protection】: Our protective layer provides strong protection with a scratch-resistant and ultra-hard PE outer shell, and is filled with soft EVA material for shock absorption. These protective measures ensure that our children can have fun while playing and also receive good protection. Using the helmet and knee pad set together can better ensure comprehensive protection for children. 2. 【Adjustable Size】: For size S, the length of the strap is 20 - 31 cm, the length of the folded strap is 12.5 - 18 cm, and the length of another folded strap is 27.5 - 33 cm (the thigh strap can be worn 2 - 3 cm above the knee); for size M, the length of the strap is 23 - 36 cm, the length of the folded strap is 14.5 - 22 cm, and the length of another folded strap is 33 - 40 cm (the thigh strap can be worn 2 - 3 cm above the knee). 3. 【Product Features】: Made of high - density fabric and a PE outer shell for effective protection. The straps are equipped with tapes and can be adjusted in length as needed. The anti - slip design is more beautiful and practical! The set includes knee pads, elbow pads and other protective gear, protecting the body's major joints from injuries. 4. 【Gift Package】: It is convenient for transporting and storing the roller skating protective gear after each roller skating or long - boarding competition. The knee pads are unisex, suitable for children's elbow and knee protection, as well as children's skateboard protective gear. 5. 【Durable and Cost - effective】: Double - stitched, it is more durable than other cheap competitors on the market. It includes knee pads and elbow pads specially designed for children aged 8 - 14, as well as knee pads for adults, skateboard accessories, ice skating protective gear and roller skates.