Moisture wicking fabric with 4 way stretch Reflective Details Brushed lining for warmth High density heat seal logo on left chest Textured detail on shoulders, upper back and side Description One of the best moisture wicking fabrics on the market, this shirt will function just as well as a cold weather base layer or a stand alone shirt for warmer spring days. Sizing: Back body length (in): Small = 28.75 | Medium = 29.75 | Large = 30.75 | X-Large = 31.75 | XX-Large = 32.75 Model is 5’7 and is wearing size Medium