Thousand Chapter urban bike helmet, made of vegan leather for the strap, hand painted tortoiseshell, matte and metallic polycarbonate, marbled visor, removable magnetic light. Size guide: Size S: 54-57cm Size M: 57-59cm Size L: 59-62cm Featuring MIPS technology to reduce the risk of concussion, a powerful magnetic rear light and a hidden adapter to attach the helmet to a bike lock, while maintaining a unique dose of style with its integrated visor and foolproof practicality with a one-handed fastening system, combine comfort and safety with this lightweight, high performance, ventilated helmet with 8 ventilation slots. The Thousand Chapter, inspired by the lines and vintage look of its predecessor, will offer you a weighty support on the road, to ride as safe as with small wheels... No small wheels.