Thousand Chapter urban bike helmet, matt color visor. Guide sizes : Size S : 54-57cm Size M : 57-59cm Size L : 59-62cm Equipped with MIPS technology to reduce the risk of concussion, a powerful magnetic back light and a hidden adapter to attach the helmet to an anti-theft device, while keeping a unique dose of style thanks to its integrated visor and a practical one-handed attachment system, combine comfort and safety with this helmet as light as it is efficient and airy, with 8 ventilation spaces. The Thousand Chapter, inspired by the lines and vintage look of its predecessor, will offer you a weight support on the road, to ride as safe as with small wheels . Without small wheels.