Big mountains and deep snow – the women's Arc'Teryx Sentinel bib is made for epic days. Storm protection comes from the N70p 3L GORE-TEX fabric. Durably waterproof, windproof, and breathable, it has a brushed liner to add light insulation and softness. The full bib keeps snow from creeping in and has a large front pocket to stash gloves, beanie, or snacks. The TouringCuff™ keeps out snow while making buckle management easy, thigh vents dump heat on the uptrack, and an embedded RECCO® reflector can aid search and rescue.