The Fin Vario Baskets provide you with two types of basket. For hard and soft conditions. The baskets are small, light, and incredibly stable, while the aerodynamic design makes your pushes even more effective. The baskets fit your pole's 8 and 9 mm cones with Fin Vario sleeves and can be changed quickly and simply without tools. This lets you use your Fin Vario Ski Roller poles on the trail in winter, too.