* Hi-Fi II helmet by Red Protection
* NEW Air Band 180 Fit System - Air-fueled comfort in a low-profile headband. Adjust the soft, fleece wrapped Air Band with the pump-button on the right webbing strap to fine-tune your fit.
* REDphones Audio Accessory Compatible (also available here)
* Core Protection Standards - Original design intent: Protection. ASTM 2040 / CE 1077B/CPSC
* GlovesOn Buckle - The combination of the tri-slide buckle and away-from-collar positioning makes it easy to adjust with gloves on.
* Quick Clip II Ear Pads - Simply snap in place and youre ready to ride. Improved locking pads add warmth to enhance comfort and easily convert for multi-season use.
* Unison Technology - Where form, fit, and function become one. This ultra smart technology engineers the entire fit system, helmet shape and mechanics in unison, leading to reduced bulk and weight, a superior fit, and ultimately a better riding experience.
* FineTuning - Customize the level of warmth, padding, and protection desired for helmets, accessories and body shielding with modular padding systems and removal options. When it comes to audio, upgrade any 2010 or 2011 adult RED helmet with REDphones
* Goggle Gasket - Fully removable shield that eliminates the gap between goggle and helmet while remaining windproof and breathable

Small = 55-57 cm
Medium = 57-59 cm
Large = 59-61 cm
XL = 61-63 cm