Core to every Rebar(TM) CottonStrong(TM) Long-sleeved T-Shirt is Ariat's ultra-comfortable yet equally durable jersey fabric. A hidden pen slot in the chest pocket offers easy access while you're on the job. Greater Arm Mobility(TM) helps extend arm and shoulder range-of-motion so you can move freely Ribbed crewneck and cuffs Hidden pen slot in left chest pocket helps keep writing tools secure and close at hand