Features: 170 gsm mid-weight cotton twill to keep you cool while still being tough enough for any jobUnderarm and upper back mesh vent inserts to keep you cool in any environmentTriple stitched seams3M 8910 reflective tape in H configurationTwo chest pockets with button closures and pen partitionExtended curve shirt backFabric: 100% Cotton Twill – 170 gsmSizes: S – 5XL, 7XL