4.2 Oz., 100% Airlume Combed And Ring Spun Cotton; Athletic Heather Is 90 / 10; Sideseamed; Retail Fit; Youth Sizing; Ribbed Cuff; Tear Away Label; Pre-Shrunk; Bella+Canvas Uses Sustainable Manufacturing Processes With Blue Sign Certified Dyes, Efficient Dye Houses That Adhere To The State Of California’s Epa Regulations Around Waste Water Treatment And Usage, And Cutting Facilities In Los Angeles That Run On Partial Solar Power With Comprehensive Recycling Programs For Paper Waste And Fabric Scraps.