This sort of headgear is held in high regard by mushers, ski tourers and anyone who's ever spent some time in the Nordic fells on a bitterly cold, windy Fall day. The cap gives complete protection for your ears and its peak has a metal wire, allowing for and adjustable shape. And as you'd expect of SealSkinz, the cap is also completely waterproof. - Waterproof, windproof and breathable - Soft fleece liner - Stretch at rear - Velcro adjustment at rear - Peak with metal wire for adjustment - M = 57 cm - L = 59 cm - XL = 61 cm This product used to be called the "Waterproof Extreme Cold Weather Hat".