Smartwool Men's Active Ultralite Short Sleeve Size:L True Flex is an exclusive

True Flex is an exclusive Atomic shell material that means your flex and feel remains constant in a variety of temperatures

- 3-pieced lugged traction rubber outsole capable on road or moderate trail surfaces and in varying climate conditions

Developed with insights from professional trail runners

Finetuned for demanding endurance races and runners

Smartwool Men's Active Ultralite Short Sleeve Size:L True Flex is an exclusive### Smartwool Says ### Simple but practical, our Men's Sport Ultralite Short Sleeve tee is soft yet functional, for all day comfort and utility. Its super light performance fabric a blend of ZQ certified Merino wool with TENCEL Lyocell fibers, this performance fabric will help keep you cool when your intensity amps up, and its design helps minimize chafing. Plus, it's odor resistant, breathable, and temperature regulating, all helpful features when