展开An alpine-oriented midlayer with an emphasis on breathability, the Arc'teryx Proton LT Hoodie excels at high-exertion activities like alpine climbing and ski touring. Abrasion-resistant and designed for full movement, the Proton LT Hoodie uses different weights of Coreloft™ insulation and air-permeable face and liner fabric for the ultimate in versatility and performance, even when damp.