This is the dual-deck, flexible casterboard that combines the thrill of snowboarding and skateboarding using four casters. Unlike less-stable models that only use two wheels, the four 80mm polyurethane casters rotate 360º on four pivoting aluminum trucks for a smoother ride than older generation casterboards. The two wide decks are joined by a flexible joint made of aluminum that allow for tight turns; the twisting movement of your legs and hips causes each deck to undulate laterally, enabling each pair of wheels to move the board forward with the same sensation as a snowboard. Both concave decks are made of durable ABS and each are topped with a gripping sandpaper surface for confident footing for riders up to 200 lbs. For ages 8 and up. 32 3/4" L x 9" W x 4 3/4" H. (8 3/4 lbs.)