The Arcteryx Vertex Alpine are a lightweight and durable hybrid of a trail running shoe and a stiffer scrambling or approach shoe. They feature a highly breathable yet exceptionally hydrophobic and hard wearing Matryx woven polyester upper. The Vibram XS Flash 2 outsole with aggressive 4mm lugs designed specifically to provide grip while edging and offer on-trail traction with climbing performance. The knit collar seals out debris and integrates with the tongue to create a secure, comfortable sock-like fit. A TPU shank provides underfoot protection and stiffness for improved stability, the 8mm drop with a total 18mm stack height to maximise comfort on runs that last all day. Arcteryx Vertex Alpine Mens Features Abrasion-resistant Matryx woven polyester upper TPU shank Vibram XS Flash 2 outsole Knit collar seals out debris Toe cap Integrated tongue pocket 8mm drop Weight: 336g (per shoe UK8) - 672g per pair