9 oz. 80% cotton/ 20% polyester blend. 100% cotton 30 singles face yarn. Split stitch double needle sewing on all seams. Twill neck tape. 1 x 1 ribbing at neck, cuffs and waistband. Standard fit. The pigment-dyeing process gives each garment unique character. Please allow for slight color variation in production and washing. Care Instructions: Due to the nature of pigment dye, loose pigments may remain on the surface of the garments. We therefore strongly recommend washing these garments only with like-colored garments, as some of the pigment dyes may stain light or white colored garments in the wash cycle. Washing the garments in cold water will reduce the possibility of staining.