4.5 oz., 100% combed ringspun cotton fine jersey; Heather: 90% combed ringspun cotton, 10% polyester; Ash: 98/2, Granite Heather & Vintage Colors: 60/40; White & Ash are sewn with 100% cotton thread; Taped shoulder-to-shoulder, topstitched ribbed collar; Double-needle ribbed binding on neck, shoulders and leg opening; Innovative three-snap closure; Snap Tape Technology that keeps kids safe and secure; EasyTear� label; CPSIA compliant- tracking label in sideseam; Inventory is transitioning to plastic snap closure