Amazon.com : Kids Snow Bike Sled Snow Ski Set for Balance Bikes, Bike Pedal Conversion Kit Bike Accessories Bicycle Rocking Base, Bike Rocker Ski Bike Pedal Kit for 12-inch Bicycle Tire Models (
Lenz Sport Ski Retention System for Ski Bike - Lenz Sport
BikeBoard Skis »
SnowBike Conversion Kit | Envodrive
Ski bike conversion
Lenz Sport Launch SkiBike - Freestyle Ski Bike Colorado
Fat Bike Skis
the S-Trax conversion kit turns your bike into a snowbike