MSR Men's Revo Ascent Snowshoes External Traction: Aggressive perimeter teeth of ExoTract deck provide advanced traction, especially on traverses, while split teeth of Torsion2 crampons better distribute forces for more continuous contact in harsh conditions. Durable: Injection-molded plastic deck withstands abusive conditions, plus adds unique torsional flex for a deep purchase. All-Condition Adaptability: Modular Flotation tails (sold seperately) allow you the maneuverability of a smaller shoe in packed conditions with the added, on-demand flotation. Uphill Efficiency: Ergo Televators reduce fatigue and increase traction on the steeps with an ergonomic design that engages with a flick of a pole grip. Made in the USA and Ireland