MSR Women's Lightning Flash Snow Shoes (25-Inch, Ice White) SpeedLock Binding System, our most comfortable, easiest and adaptable binding. It secures with a single strap and an optional instep strap can be added for absolute control in challenging terrain. 5" Modular Floatation tails are now compatable with 360 degree traction frames of our Lightning snowshoes. Not compatible with pre 2010 snowshoes.