Mountain Hardwear Women's CoolHiker Short Sleeve T-Shirt - The Womens CoolHiker Short Sleeve T by Mountain Hardwear is literally the coolest technical hiking tee on the market. It has Cool.Q ZERO technology on the back and sides of this shirt that actually lowers the temperature of the fabric when you start sweating, providing an immediate and ongoing cooling sensation. The Poly/spandex blend offers the feel of cotton, but it dries quickly and will stretch with you. Flat-lock seam construction eliminates chafe, the anti-microbial finish eliminates odor, and the UPF 25 fabric provides protection from the sun. For a lightweight shirt great for hiking and backpacking that truly has it all, check out the Womens CoolHiker Short Sleeve T by Mountain Hardwear.