The Biddle Shirt is an American Made, Unisex, long sleeve, hooded 1/4 Zip hunting garment with a Zippered Pocket, that can be worn as a Base or a Mid-Layer, depending on how hot or cold you run. This Poly/Nylon/Spandex shirt is durable as hell, breathable, 50 UPF and is available in 5 color variations, in our Thicket Camo. Why Biddle? The Biddle Mainline is where I took my first steps on the hunting grounds as a baby and is where I cut my teeth on hunting. The Sage Color Variation works well on the East Side, in open country and our Duck Hunter's love it on the Columbia River and in fields!