Above treeline, where temperatures are cold and exhaustion lies just below the surface, every ounce counts. So, it's a good thing you have the Rab Endurance Down Mittens. Weighing just over seven and a half ounces but packed with 650-fill down, these mittens ensure warmth in extreme environments. The durable Pertex Endurance outer is reinforced with abrasion resistant panels on the palm and finger tips to increase durability against ice, ropes, and tools. Simple wrist loops keep your mitts where they're supposed to be, and not rocketing down the side of the mountain. A wide opening offers easy on and off, and a drawcord closure keeps snow and drafts out, leaving your hand warm and ready to work.