ThisWear Sexy Math Derived Long Sleeve T-Shirt 100% Cotton 100% cotton (preshrunk), Sport Grey has 90%/10% cotton/poly with double-needle neck and hem. For great comfort, it has taped neck and shoulders, rib knit cuffs. The design is printed with new age printing technology, direct-to-garment. It is printed with a water-soluble and eco-friendly ink. It is cured with a heat treatment process to ensure the color-fastness and lasting durability of the design. Designed and printed in the United States. This is not an unauthorized replica or counterfeit item. This is an original inspired design and does not infringe on any rights holders rights. The words used in the title and/or search terms are not intended to imply they are licensed by any rights holders.