This hat is a flex fit with two sizes: s/m or m/l. It is made of 100% polyester. It has a structured baseball cap fit. There is an electric blue lower case “n” on the front and a neon heart symbol in the same electric blue color thread on the back in the middle of the hat. You can check out all details of the hat in the picture gallery as well. Rock this hat and let your neon heart shine!!!