MSR Lightning Ascent Snow Shoes PosiLock AT Binding System, our most aggressive and secure. The two-piece design solidly conforms to any footwear. 5" Modular Floatation tails are now compatable with 360 degree traction frames of our Lightning snowshoes. Not compatible with pre 2010 snowshoes. Ergo Televator saves energy on the steeps with an all new, high-clearance design engages easily with a siple flick of your snowshoe pole or gloved hand