The Hamilton Chamois Shirt is the all-American classic for the ultimate in thickness, warmth and durability. The 100% cotton is tightly woven before it's napped and brushed. Napping the cotton adds to the thermal warmth created in the fabric by creating cells that trap air. Weighing in at 8.5 ounces this shirt is rugged, durable and reliable, as it should be.Inspired by the Western Ranges, this season we have introduced two new colors. A rich Clay inspired by Westernwear, and a Faded Indigo inspired by classic workwear denim. It's the versatility of the Chamois shirt that makes this the perfect Mountain Khakis shirt. The perfect top layer during the fall... and as the temperatures drop the Hamilton is an ideal mid-layer piece. It's relaxed through the chest, sleeve and waist meaning it will easily accommodate a Mountain Khakis Axe Thermal underneath. If you haven't tried a Chamois shirt before, this is your best new purchase of the season.8.5oz 100% Cotton ChamoisBrushed winter