Anyone who has ran this jacket will verify it is an absolute beast in the field. Extremely waterproof, windproof, breathable, and durable, this 3-layer stretch jacket includes seven accessible pockets to carry the essentials for a hunt in the rain and snow. We can't say it enough how much of an absolute workhorse it is for wet and windy conditions. In addition to backpack compatible front pocket placement, the Nunavut features large armpit ventilation. We've sized this jacket to fit over all of our base layers and insulation layers even while worn together. This piece will accompany us on all mountain hunts, whitetail, and it is a great outer layer in the duck blind to block wind and moisture. Membrane Waterproofness: >20,000mm Membrane Breathability: 24,000gr/m2/24h Standard Used: JIS L 1092; JIS L 1099 B1