The Giro Source MIPS helmet fuses advanced technology with rugged mountain bike design for excellent trail performance. You can't go wrong with integrated MIPS brain protection system" giving you protection against rotational forces for an added level of security on top of the full-wrap in-mould polycarbonate shell with EPS liner. It gives you deep coverage and ventilation thanks to 17 vents with internal channelling to keep you cool and comfortable on those long trail rides. While the Roc Loc 5 fit system gives you the perfect fit" which is important for both safety and comfort. The Giro Source MIPS is a high quality MTB Helmet that does everything well - safety" comfort" ventilation and style.