Peltonen SONIC STEP + RO BASIC JR + SKI HOLDER Children’s skis: The Peltonen SONIC STEP + RO BASIC JR + SKI HOLDER have Airchanel design. For climbing support, the skis are equipped with a step system (scales) without the need for waxing. The skis are sold in a set with the Rottefella Basic binding. Peltonen SONIC STEP + RO BASIC JR + SKI HOLDER