A versatile short-sleeve performance tee with excellent wicking and breathability, the Mountain Hardwear Men's Crater Lake(TM) Short Sleeve T-Shirt is a comfortable athletic top for everyone, from elite competitors to weekend warriors. Moisture-wicking technology works to keep you cool and dry, even when you're straining to hit that personal best.Fabric Body: UB Solar Knit 88% Polyester, 12% ElastaneSmooth-as-silk solar knit wicks moisture and dries quicklyArm gussets for chafe-free movementBreathable fabric for even the most humid daysFit: Standard