Technical approach shoe balancing stability and grip with a light, fast design. Balancing the fit and performance of a trail running shoe with the stability required for long, technical approaches, the Vertex Alpine redefines approach footwear. Made for all-day mountain travel, it’s light, fast, and delivers the support and protection required for rugged, varied terrain. The sticky Vibram XS Flash 2 outsole is designed for edging, on-trail performance, and grip in wet and dry conditions. A TPU shank and toe cap add protection, and a knit collar seals out debris. Full Product Features Technical Features - Lightweight - Durable - Supportive construction - Abrasion resistant Footwear Construction - Integrated tongue pocket tucks away laces to prevent snags and untying - EVA/Polyolefin blended midsole features higher abrasion component in the forefoot for scrambling - Toe cap adds protection and abrasion resistance - Knit collar seals out debris and integrates with the tongue to create a secure, comfortable sock-like fit - Abrasion-resistant Matryx® woven polyester upper is durable, lightweight, breathable, and flexible - TPU shank provides underfoot protection and stiffness for improved stability Footwear Geometry - Ergonomically patterned 4mm lugs - Offset (Stack height): 8mm (18mm : 10mm) Footwear Outsole Construction - Vibram® XS Flash 2 outsole delivers outstanding grip and durable, sure-footed performance across a range of conditions - Tread is specifically designed to provide grip while edging and offer on-trail traction with climbing performance Sustainability - PFAS (Per- and polyfluoroalkyl substances) Compliant Materials - Lining: Textile - Insole: Textile - Outsole: Rubber