The Arc’teryx Gamma MX Jacket (Men’s) is a midweight softshell engineered for dynamic performance in cool to cold conditions where a balance of weather resistance, stretch, and breathability is key. Built from Fortius™ 2.0 softshell fabric, the MX is the most weather-protective and robust jacket in Arc’teryx’s Gamma series — designed to excel in “mixed weather” environments that combine wind, light precipitation, and lower temperatures. Unlike lightweight softshells that prioritize ventilation, the Gamma MX incorporates a slightly warmer textile and fleece-backed feel that helps trap heat during cooler fall and winter conditions. The softshell face fabric resists wind and beads light moisture thanks to a durable water-repellent (DWR) finish, offering protection in drizzly or snowy weather where a minimalist shell might fall short. Articulated patterning and mechanical stretch support a wide range of motion for active outdoor pursuits such as hiking, alpine approaches, backpacking, and cold-weather travel. The regular fit accommodates light layering underneath, while the adjustable hood and secure pockets contribute to functionality without adding unnecessary bulk. Although not intended as a fully waterproof rain shell, the Gamma MX Jacket serves as a versatile “do-it-all” softshell for users who want capable protection in harsher outdoor conditions without sacrificing mobility.

Key Specifications