4 oz./35 g., 60/40 combed ring-spun cotton/polyester, 30 singles;Fabric Laundered; 1x1 ribbed collar; Tear-away label; Sideseamed; Next Level Apparel has a recycling program for all fabric waste collected from the cutting process. All fabric scraps are sent to a recycling company that cleans and processes them to be used for cushion filling, rugs, etc. To date, 24.3M pounds of fabric have been recycled.;