MSR Lightning Ascent Snow Shoes Unrivaled Traction: 360 degreeTraction frames deliver edge-to-edge grip, and split teeth of Torsion2 crampons better distribute forces and offer more continuous contact delivering unmatched traction on any terrain, in any conditions Secure Attachment: Two-piece, independently conforming PosiLock AT bindings create our most secure, freeze-resistant attachment, regardless of footwear All-Condition Adaptability: Add-on Modular Flotation tails to allow you the maneuverability of a smaller, primary snowshoe with the added, on-demand flotation of optional, 5-inch (13-cm) tails Uphill Efficiency: Ergo Televators reduce fatigue and increase traction on the steeps with an ergonomic design that engages with a simply flick of a pole grip