Polyurethane sole ★GLIDE SAFELY:Rugged pu wheels,provides greater durability and high performance of bearings to ensure stable and comfortable. ★SAFE TO USE:Balanced,easy to control people's center of gravity.and small size,light weight,easy to carry,free to switch. ★MULTIFUNCTION SPORTS SHOES:light skates,that allow you to perform fitness exercises at any time and anywhere in your daily life,the perfect combination of leisure and sport.