Arc'teryx Gamma MX Softshell Jacket Review - Tried and True Softshell The warmest Gamma there is. Arc'teryx built the MX Hoody for ice climbing — here's where it excels and where it runs too hot 🛒 SHOP THE ARC'TERYX GAMMA MX HOODY: 👉 arcteryx.sjv.io/dyqEWQ In this review, we break down the Arc'teryx Gamma MX Hoody — the warmest, burliest member of the Gamma family, where "MX" stands for mixed conditions. Originally engineered for the rigors of ice climbing, it's since become a go-to for cold-weather alpine missions of all kinds. The fabric is Fortius™ 2.0: a hardwearing 60D stretch softshell at 233gsm (84% nylon, 16% elastane) with a brushed poly fleece backer that adds real warmth and next-to-skin comfort. It blocks wind exceptionally well, sheds snow and light precipitation via a PFAS-free FC0 DWR, and the elastane content means it moves with you instead of fighting you. The helmet-compatible StormHood™ seals around your face without killing peripheral vision, taped sea...