Traditional bicycle helmets are notoriously unfashionable, but thanks to Danish company YAKKAY, the bike helmet just got a whole lot cooler. The YAKKAY Smart One is a new style of helmet with various covers available, designed to transform your helmet into a hat and become an accessory to your outfit.Once your helmet is fitted, you slip a cover over the top and the helmet becomes a cool looking hat, rather than a clunky piece of safety equipment. Helmet meets European CE standard (EN1078). Get the most comfortable fit using the provided adhesive foam circles. Rounded ear straps and adjustment buckles in polished stainless steel. Helmet has ventilation holes to help the air circulate, keeping your head cool. Cover has no open holes, helping to keep your head dry when it rains. Lots of fashionable and unique cover designs to choose from. Available in: Small (53-55cm), Medium (55-57cm), Large (57-59cm).