Want to classic ski on one of V2's Aero models? You may want training wheels to help you start. Aero Outriggers work with Aero XL 125S and Aero XL 150S Roller Skis and provide stability while classic skiing. By using one Outrigger per ski mounted on the outside of the ski, skiers can ski with classic technique on Aero Roller skis. As their technique improves, the Outrigger can be rotated away from the ground like training wheels on a child's bike so they provide stability only when the ski is substantially tipped. Sold individually.