Quickly get the perfect fit when you dial the Kask K50 Evo Helmet's 3D Up-N-Down adjustment system. Now you can ride without annoying helmet migration, pinching joints, or—thanks to large, air-moving vents—a hot head. In the unlucky event you left your jungle-cat reflexes at home and a squirrel happens to take it life by jumping into your front-wheel's spokes ... sending you ass-over-teakettle in perfect head-first, lawn-dart form, the impact absorbing in-mold construction will help prevent any serious injury.

• Double-pivot Up-N-Down adjustment system, controlled by a central ratchet wheel, cradles the back of the head for a precise and comfortable fit
  
• In-molded polystyrene shell and polycarbonate inner ensures a lightweight shock-absorbing structure
  
• CoolMax removable and washable inner padding keeps you comfortable and the helmet funk free