Charles River 9646 Response Work Shirt Include heavy duty work-wear that’s made to last with this Response Work Shirt! Made from a blend of 80% cotton/20% polyester (19.66 oz./lyd/400 gsm), it includes a mock turtleneck design and rib knit cuffs and hem. It also has a locker loop on the inside below the collar, a 9″ radio chest pocket with inner notepad holder and metal zippers with easy grab rubber pulls. Tall sizes are also available. Just add your company name and logo for a shirt that everyone is bound to love.