CARHARTT. 103555253. MENS RUGGED FLEX RIGBY SHORT SLEEVE WORK SHIRT. DARK KHAKI. This men s short-sleeve work shirt provides the range of motion you need when chopping wood or filling a grain bin. It s made of heavyweight cotton that feels soft yet durable and it packs just enough stretch that you can reach overhead with ease. 6.5-ounce 98 percent cotton with 2 percent spandex. Relaxed Fit. Rugged Flex technology for ease of movement. Two chest pockets with additional left-chest pocket panel for added storage. Button-down collar. Two-button adjustable cuffs with extended plackets. Faux horn buttons. Drop-tail hem for additional coverage. Carhartt-strong triple-stitched mains seams.