The Merino Wool Plus Light Tees are the perfect intersection of wool and performance. These shirts are a comfortable fit, warm in cool weather, yet comfortable on hotter days as well. Wool is my preferred fabric for hiking and running because of its anti-odor properties and comfortable feel against the skin. The addition of polyester to the Plus Light series does greatly increase the longevity of the fabric but does slightly affect the overall anti-odor capabilities of the fabric. These tees are going to be my favorite activewear shirts for years to come!