Arc'teryx VERTEX SPEED LOW W sweaterweather Helmet compatible hood The Powercage design and Helmet compatible hood red mirror cuts or glare and holds the knot RIDE Vibram® Megagrip outsole with LITEBASE technology delivers durability and enhanced grip across a range of conditions while shedding every gram possible Zonal lug patterns are specifically designed to provide forefoot grip while smearing with comfort and surefootedness on the trail Mapped dual density midsole construction combines softer heel and midfoot cushioning for running comfort with firmer forefoot support for rocky terrain Outsole and midsole zones integrate for optimal response and performance 23:16 stack 7mm drop PROTECTION Abrasion resistant PFAS free Matryx® woven polyester upper is durable lightweight