Our Durastretch work shirts deliver a one-two powerful combo of strength and flexibility. Each shirt is lightweight, sturdy, and engineered for all-day comfort that moves with you. FR Solid Twill DuraStretch Work Shirt Product Features : Greater Arm Mobility™ helps extend arm and shoulder range-of-motion so you can move freelySun Protection Fabric™ helps block harmful UV rays, keeping you covered and comfortable during long days outdoors, Adjustable cuffsLeft chest pocketButton-front closure, Hidden pen slot in left chest pocket helps keep writing tools secure and close at hand Men's Flame-Resistant Solid Twill DuraStretch Work Shirt in Blue, Size: MT by Ariat