Comparison Equipment : What is the best choice ?

Packing a real aerodynamic punch, the legendary KASK Protone Helmet Grey/Green might look traditional, but it's ingenious shaping and ventilation is what leaves the competition in its dust. Extensively pushed to its limit in the wind tunnels by Team Sky, air passes over and through the Protone with ease, while also bringing the added benefit of extensive breathability and sweat wicking at the same time.

ENDURA HUMMVEE Helmet Matte Black : The Hummvee line is Endura's gateway collection into the world of performance, functional and technical apparel for riding off-road. Loaded with features and value, every Hummvee piece will make your riding better, faster and more comfortable. Remember, with its durability, multiple pockets and versatility, much of the Hummvee collection also works a treat for your daily commute.

GIRO SWITCHBLADE MIPS Helmet Matte Black : The Switchblade MIPS is Giro's new ASTM downhill certified full face helmet with a removable chinbar. Everything about the Switchblade is optimized for the descent, and that's why it's certified to CPSC, EN-1078 and ASTM-1952-DH with and without the chinbar. The chinbar is easy to remove—just push the buttons under the chinbar, rotate up, and remove—and it's just as easy to reinstall.

The upper of these Mountain Bike Shoes Giro Troop Boa Black is mesh, for greater breathability, and a seamless coating ensures a smooth finish. The show also features an intuitive quick-release system with the BOA wheel.

This GIRO AEROHEAD MIPS Helmet White/Silver takes the same wind-cheating silhouette as the leading-edge Aerohead Ultimate, but adds increased ventilation to keep triathletes and time trialists cool when the competition is hot. By using a polycarbonate shell, Wind Tunnel ventilation and internal channeling, this helmet is proven to boost cooling power while remaining aerodynamic. Additionally, Aerohead MIPS features a wrap-around eye shield that offers an impressive field of view with the convenience of a magnetic anchor attachment to allow easy storage of the lens in the "flipped up" position – Perfect for fast swim-to-bike transitions.