evo.com | Sweet Protection Bike Helmets > The Sweet Protection Ripper MIPS CPSC Bike Helmet gives your young trail blazer serious head protection that's specifically designed for their growing noggin with a youth-specific shell and specially engineered EPS foam that accounts for kids' more elastic craniums. STACC Ventilation STACC is short for Superficial Temporal Artery Cooling Channel. A front vent, an internal channel, and an exhaust vent cool down the temporal artery without exposing your temples which are the most vulnerable area of the head. Patent Pending. MIPS(R) The MIPS Brain Protection System helmet-integrated low-friction layer is designed to reduce rotational motion transferred to the brain from angled impacts to the head. Polycarbonate / EPS Foam CE EN 1078 One Size with Large Adjustment Range Fits head circumferences from 53cm to 61 cm (20.9 to 24.0 inches). | Sweet Protection Ripper MIPS CPSC Bike Helmet 2026 - 53/61 in Black