5.4 Oz, 32 Singles; 52% Airlume Combed And Ringspun Cotton, 48% Polyester ; Athletic Heather: 90% Airlume Combed And Ringspun Cotton 10% Polyester ; 1x1 Micro Rib; Stretch Fit; Fitted; Sustainably Produced; Wrap Certified And Fla Participating Company; 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.