Description of The North Face Rucky Chucky GTX XCR Shoes Named after the river crossing at mile 78 of the Western States 100, the Rucky Chucky GTX XCR® is engineered to withstand long-distance hauls over land and water. The ultimate high-performance mountain-running shoe for endurance athletes, the Rucky Chucky Gtx Xcr is geared up with Gore-Tex® XCR® waterproof, breathable membrane and a slew of other technical features you rely on to make it through long runs. Features: [Bottom] Lightweight, dual-density, compression-molded EVA midsole with X 2™ provides high-impact cushioning and long-lasting support [Upper] Gore-Tex® XCR® waterproof, breathable membrane Abrasion-resistant, bomber synthetic nubuck Highly breathable, protective sandwich-mesh upper Innovative TPU forefoot Snake Plate™ with medial/lateral outriggers provides torsional support while giving ultimate protection from stone bruising Midfoot shank ensures a stable and comfortable ride from heel-strike to toe-off Northotic™ ergonomic footbed Semi-straight lasted with medial-posted rearfoot Thrust Chassis™ and X-Dome™, which provides mechanical assistance to the midsole and support for overpronators Tenacious™ Grip outsole provides excellent on/off road traction as well as stability and durability under a variety of weather conditions and temperatures X-Frame® medial/lateral TPU welding reinforcements for support