Carhartt Long Sleeve Mens Cotton Long Sleeve Tee-Shirt Size M Loose-Fir Heavyweight Long-Sleeve T-Shirt Solid: 100% cotton jersey Heather Gray: 90% cotton/10% polyester Other Heathers: 60% cotton/40% polyester Rib-knit crew neck and cuffs Side-seam construction to minimize twisting Carhartt logo on left sleeve Tagless