Force(TM) fabric wicks away moisture to keep you dry and comfortable while working hard.. . . . . 65% cotton, 35% polyester; plaited jersey knit; weight: 5.75 oz.. Force(TM) fabric construction wicks away moisture. Stain Breaker(TM) water based spray-on treatment repels stains. Raglan sleeves for easy movement. Left chest pocket. Tagless neck label and smooth flatlock seams for an extra level of comfort. Field tested by real workers on the job.