I purchased this about 5 or 6 years ago. It has been stored at home after I outgrew it. I used it frequently, so there are signs of fading and dirt. Also, the elastic for size adjustment at the back has stretched out. Please check the photos m(_ _)m The circumference of the head is not written on the tag, but when I measured it, it was around 52 cm. Would anyone looking for this be interested?