Printed on the hoodie: Go Sage Yourself! Difficult to explain just translate the following letters they give a clue GFY, there is knowledge hidden in the code. High-quality 50% Cotton 50% polyester Hoodie pre-shrunk material this hooded sweatshirt is hard-wearing and easy to wash and dry. (Please note that the placement of the image might differ slightly due to size) Please find the size charts in the listing photos.