We are the official seller of NELEUS on Walmart. When purchasing please check out the NELEUS brand store you can see more NELEUS products here: https://www.walmart.com/brand/neleus/10002162 If you have any doubts before purchasing or about the after-sales problems after purchasing please feel free to contact us. Please refer to our size chart to select the appropriate size. Our products size follow the ?US size? on our product label. Neleus Womens Athletic Compression Long Sleeve T-shirt made of 90% Polyester and 10% spandex high quality fabric has the excellent dry fit ability to release heat and sweat quickly keeping you dry wherever you are. Tight fit and compression design minimizes muscle jitter reduces the risk of injury during exercise and fits like skin to highlight your curves. It is ideal for women s daily sports and casual wear and is also a good choice for family and friends as a gift.