Windproof, waterproof, and durable. BLACKYAK Malvi Pants are perfectly engineered for high altitude activity. They offer great freedom of movement and are very lightweight and can be used for trekking, mountaineering and ski touring. One special feature of the Malvi Pants is the hidden snow cuff pocket, this detail has been added to safely and secretly store essential items. Large side ventilation zips ensure maximum ventilation.