5.5 oz. 100% combed ringspun cotton jersey; White is sewn with 100% cotton thread; Heather is 93/7 combed ringspun cotton/polyester jersey; Double-needle ribbed binding on neck, shoulders and sleeves; Easytear™ label; Sideseam construction; Reinforced three snap closure; Double-needle hemmed leg opening; Cpsia compliant tracking label in sideseam