Kali Viva 2. 0 Helmet Protect your dome The classic bucket-style helmet gets a revamp with the Kali Viva 2. 0 Helmet. This helmet is an update to the popular Viva, and features a durable outer ABS shell for helmet longevity, with a PC under wrap construction and a crash-absorbent EPS foam inner core for exceptional protection. Unlike some other bucket helmets that can leave you feeling hot and sweaty, the Kali Viva 2. 0 is constructed with 10 vents to increase airflow and keep you cool, while antimicrobial padding keeps the stink at bay even after repeated rides. This CPSC-rated helmet is as comfortable as it is protective, with a Dial Fit System providing quick and easy one-handed fit adjustment, letting you spend more time riding and less time messing with the adjustment of your helmet. Features Durable ABS outer shell protects the integrity of the helmet EPS foam core helps to absorb forces from impacts Antimicrobial padding keeps you comfortable and stink-free, even after repeated rides Dial Fit System for easy one-handed fit adjustment Lifetime Crash Replacement Guidelines SPECIFICATIONSOuter Shell Material ABSCore Material EPS foam Retention System Dial Vents10Safety Certifications EN 1078, CPSCIntended Use Dirt Jump, BMX, Urban Weight475g SIZINGSize Small/Medium Large/XLHead Circumference (cm)54 - 58cm58 - 61cm | Kali | Viva 2. 0 Helmet Men's | Size Small/medium In Solid Black