4.2 oz.(US) 7 oz. (CA), 52/48 Airlume combed and ringspun cotton/polyester, 32 singles
Athletic Heather & Black Heather are 90/10 airlume combed and ringspun cotton/polyester 
Heather Prism colors are 99/1 airlume combed and ringspun cotton/ polyester (Unique coloring, grey flecks of heather pulled through the base color)
Retail fit
Unisex sizing