I forgot my swim cap, so I bought this in a hurry. I've used it a few times, but it's now too small, so I'm selling it. This is a pink Arena swim cap, size 48-52cm, made of 80% nylon and 20% polyurethane for a comfortable fit. - Size: 48-52cm - Material: 80% nylon, 20% polyurethane - Color: Pink - Brand: Arena Thank you for looking.