AQUALUNG 3mm Original Hood 3mm thick neoprene wet suit material Head insulation, head sunburn prevention Increases heat retention in cold water. Suitable for diving in relatively warm seasons. Features: ・Made of 3mm stretchy and durable neoprene. ・With D-ring that can be fixed to a wetsuit. ・Standard hood covering head and neck. For those who feel the cold easily or want to avoid sunburn on their head. Thickness: 3mm Size: XL Head circumference size guide XL: 59-62cm Unused, new item, only tried on! I am selling it because I have no opportunity to use it. It is made a little tight, and fits like a men's M-L. Please note that it will be folded for shipping via post.