The Giro Hoxton MIPS helmet offers essential protection in a sleek and sophisticated design. Its compact shape provides excellent ventilation and deep coverage, with a durable ABS plastic shell designed to easily accommodate ponytails. The fit is luxurious, featuring the adjustable Roc Loc Urban system that provides superior comfort and enhanced stability by turning a dial. Additionally, the Hoxton MIPS is equipped with MIPS Evolve, which can help redirect impact forces to provide an additional measure of protection in certain impacts. Features:Sleek urban style Ponytail compatible Soft, moisture-wicking padding Reflective details and straps ABS shell with EPS lining Soft, moisture-wicking padding Adjustment system: Roc Loc Urban 3 Wind Tunnel vents with deep internal channeling Sizes: S: 20" – 21.75" / 51 – 55 cm, M: 21.75" – 23.25" / 55 – 59 cm, L: 23.25" – 24.