Buy All Your Problems Ever Are Because You'Re Not Drinking Enough Water Gift Tee Shirt6. 1 ounce, 100% cotton Ash is 99% cotton, 1% poly; Sport Grey is 90% cotton, 10% poly; Dark Heather is 50% cotton, 50% polyester Double needle neck, sleeves and hem; Unisex sizing; consult size chart for details Decoration type: Digital Print Size Chart 100% cotton, 6 oz Banded neck and armholes; Double needle hem Ash Grey is 99% cotton, 1% polyester, Sport Grey is 90% cotton, 10% polyester Decoration type: Digital Print Size Chart 8 oz 50 50 cotton