Fit & design: fitted long sleeve t-shirt seamless fabric for maximum comfort both alone and when layered mesh details add breathability where you need it the most race length meets your waistband click here if youre looking for a longer length that gives more coverage classic crew neckline thumbholes at sleeve cuffs help keep them in place technology: bodycool technology help keeps you cool bodyfree technology inhibits odor and lasts wear after wear so you stay fresh. Move freely with 4 way stretch fabric quick dry fabric wicks moisture quickly to help keep you dry and comfortable upf technology helps protect your skin against harmful uv rays (rated according to astm d6603) additional details: uv protection limited to areas covered by the fabric.