Description of The North Face Rucky Chucky Running Shoes Named after the river crossing at mile 78 of the Western States 100, the Rucky Chucky is engineered to withstand long distances. The ultimate high-performance mountain-running shoe for endurance athletes, this shoe is geared up with Tenacious™ Grip outsole; providing excellent on/off-road traction and stability under a variety of conditions and terrain. Features: Last: Endurance Running Approx Weight * [Half-Pair] 14.5 oz (414 g); [Pair] 1 lb 13 oz (818 g) *based on Men’s 9 Enhanced support, stability, and traction make this the ultimate high-performance, long-distance mountain-running shoe Abrasion-resistant, bomber synthetic nubuck Highly breathable, protective sandwich-mesh upper X-Frame™ medial/lateral TPU welding reinforcements for support Northotic™ ergonomically-designed footbed with Poron® forefoot and heel inserts Lightweight, dual-density, compression-molded EVA midsole with X-2™ provides high-impact cushioning and long-lasting support Semi-straight lasted, with medial-posted rearfoot Thrust Chassis™ and X-Dome™, which provides mechanical assistance to the midsole and support for overpronators Innovative TPU forefoot Snake Plate™ with medial/lateral outriggers provide torsional support, while giving ultimate protection from stone bruising Midfoot shank ensures a stable and comfortable ride from heel-strike to toe-off Tenacious Grip™ outsole provides excellent on- and off-road traction, as well as stability and durability under a variety of weather conditions and temperatures