5.5 oz. 100% Combed Ring-Spun Cotton, Soft-Washed. Heathers are 60/40 Cotton/Polyester, excluding Athletic Heather. Athletic Heather is 85/15 Cotton/Viscose. FEATURES: Ultra Soft Hand, Side-Seamed, Tightly Knit, Superior Printability LABEL: Tear-away. Youth sizes availabe (XS-XL).