18 Inch Doll Skateboard, Helmet & Knee Pad Set. If your 18″ doll is looking to show her stuff at the skateboard park, she can do all of her curves and flips on this skateboard set. Included are a palm tree decorated skateboard with an elastic cord to hold your doll on the board. Always conscious of safety, the protective helmet and knee/elbow pads are also included. Both the helmet and protective pads secure with hook and loop fabric. Perfect for 18 inch dolls. Doll, jacket, shorts and sneakers not included.