Arcteryx Men's Gamma MX Pant Lightly insulated, breathable soft shell pant with DWR durable water repellent treatment to resist light moisture; ideal for alpine and expedition climbing. Gamma Series: Softshell outerwear with stretch MX: Mixed Weather Adopting a guide's calculated mentality, the MX Pant is prepared for sudden shifts in weather, objectives or perspectives. Stretchy, breathable and weather-shedding fabric tackles everything from mixed routes to epic tours.