A lightweight, insulated, air-permeable men's softshell for summer alpine and rock climbing, the Proton Lightweight hoody ticks all the boxes. Octa® Loft knit insulation provides warmth and allows airflow to maintain a comfortable temperature. The durable, breathable shell is abrasion and wind-resistant, made with slightly stretchy Fortius™ Air 20 cut for ease of movement. A secure stretch chest pocket accommodates your valuables and the low-profile insulated hood fits comfortably under your helmet. Weight: 343 g Lightweight highly breathable insulated jacket Trim fit - Hip length with drop hem DWR finish helps bead water from fabric surface No Slip Zip™ front zip Gusseted underarms Articulated elbows Helmet compatible, adjustable insulated hood Two stretch woven zipped chest pockets Two zipped hand warmer pockets Adjustable hem drawcord HemLock ensures jacket stays put under a harness when reaching overhead Materials: Octa® Loft, clean finished, breathable insulation provides thermal protection while maintaining a comfortable micro climate Fortius™ Air 20 face fabric effectively balances air permeability and weather resistance with lightweight durability