The premier Gore-Tex pant from Arc'teryx LEAF the Alpha. Why do you ask? It is constructed of the most durable/breathable fabric Gore Has to offer. Gore-Tex BD450 3 Layer 40D Nylon Ripstop. With SCHOELLER Keprotec Instep to reduce abrasion with boots or crampons. The Alpha has 2 leg pockets for gloves or documents, venting leg zippers that also make it easier to get pants on and off with boots. These are cut to a military fit accommodate layering. 

•Gore-Tex BD450 3 Layer 40D Nylon Ripstop fabric is exceptionally durable, fully waterproof and windproof, and highly breathable to regulate moisture and temperature during exertion 

• Hip length, two-way #5 WaterTight™ side zippers are positioned for easy access; WaterTight™ fly zipper 

• 1"? webbing waist belt has a low profile T-lock buckle 

• Articulation in the seat and knees provides unrestricted movement 

• Large volume thigh cargo pockets are situated to work with a harness and have horizontal dump pocket openings with WaterTight™ zipper closure 

• Instep reinforced with hard wearing Keprotec® Materials

 Comes in: Wolf Grey, Black, Multicam, Crocodile and now Ranger Green

Gore-Tex BD450 3 Layer 40D Nylon Ripstop