Made from 100% polyester, they're very durable and will last a long time. The fabric wicks away moisture and dries quickly to ensure a comfy feel. The 40+ ultraviolet protection factor will guard the skin against harmful UV rays. .: Material: 100% moisture-wicking polyester .: Extra light fabric (3.8 oz/ yd² (129 g/m²)) .: Athletic fit .: Tear-away label XS S M L XL 2XL 3XL 4XL Width, in 18.50 20.00 21.50 23.00 24.50 26.00 28.00 30.00 Length, in 27.00 28.00 29.00 30.00 31.00 32.00 32.50 33.00 Sleeve length, in 33.25 34.00 34.25 35.50 36.25 37.00 37.75 38.50 EU representative: Quite Contrary Gifts, quitecontrarygiftsinfo@gmail.com, 3708 E 29th St, Unit #376, Bryan, TX, 77802, US Product information: Sport-Tek ST350LS, 2 year warranty in EU and Northern Ireland as per Directive 1999/44/EC Care instructions: Machine wash: cold (max 30C or 90F), Do not bleach, Do not tumble dry, Do not iron, Do not dryclean