TopOfStyle brings you the best-selling collection of hoodies and Sweatshirts from top stores like Amazon, Walmart, GAP, Target, etc. Grace Karin is actually a western front for a Chinese Amazon merchant. But no efforts have been taken to identify the seller on amazon, they are actually Shenzhen Feimier Garments Co Ltd based in China. The name tan is derived from oak bark used in the tanning of leather.