●nylon ●Skateboard protective gear-- ??it is great choices and very safe for you. ●Inline skating protective gear-- it is the good choice as the gift for childrens day, birthday, christmas,etc. ●Cycling elbow pads-- made of material, protecive and comfortable. ●Skates knee pad-- bike knee protector made of material, protecive and comfortable. ●Bike knee protector-- this protective gear set is specially designed to offer you perfect protection for skateboard, roller skating riding a scooter, and many other outdoor sports.