1.it's high quality and stronger design, 2.satisfy CE standard, Steel runner snow sledge for children and adult. Snow sledge(RHX-7111),.Materials: Frame: Rustless 6063 Aluminum Skis: High Density Polyethylene Seat: PE holder, strengthened Mesh Steering: Steel Leaf Springs Riding Position: Sit or Headfirst Dimensions: 1400*550*220mm.Snow sledge,snow products,ski sledge,sledge,snow sled