The Giro Athlon Mountain biking helmet squashes the racecourse with speed and design - and features the brand-new Roc Loc 5 fit system. After more than ten years of refinement, this ground-breaking fit system supplies a completely unique usage experience with an unequaled level of comfort, stability, adjustability and weight savings. With Roc Loc 5, you can easily dial-in both fit tension and adjust vertical position with a single hand. Just twist the dial for a tighter feel on difficult terrain, then back it off a notch and unwind throughout the flats or a warm climb. Even with these exceptional features, Roc Loc 5 is still 40-percent lighter than its popular predecessor, Roc Loc 4. Roc Loc 5 systems is: 1) Micro Dial. The heart of the Roc Loc 5 is this ratcheting, micro-adjusting dial. An easy, two-finger twist of the Micro Dial opens or closes the retention system and each click is audible. 2) Three-Position Vertical Fit - It's never been simpler to change vertical positions and fine-tune fit. We integrated a three-position bracket that features 15-millimeters of exact up/down movement. Like the Micro Dial, this system can be adjusted without eliminating the helmet. 3) Carefully crafted ergonomic arms are shaped to be as comfortable as possible, yet work perfectly with Giro eyewear (exactly what we call Super Fit engineering). 4) Dual Pods - These two panels are developed to securely understand the back of your head while easily nestling the occipital lobe. Strap management - with Roc Loc 5, your helmet straps are woven through the fit system, so they are constantly in the best position. Complex Internal Design - Dozens of small parts collaborate perfectly to provide incredibly easy to use change. Minimal and Light, yet Strong - Although this fit system is 40 % lighter than its predecessor, it's much more powerful. In testing, Roc Loc 5 carries out perfectly, even after 6,600 cycles (comparable to 3 years of riding with 3 big salami daily).
Upper and lower in-molded hardbodies
19 wind tunnel vents
Superior channeling for great air flow
Painted POV visor
Roc Loc 5 fit system