custom motorcycle helmets flip up Modular Bluetooth Helmet Flip-up Helmet Size Chart M 22.4 inch to 22.8 inch(57 Best flip-front motorcycle helmets as

TECH SPECS Advanced Polycarbonate Compound (APC) shell Three intake vents and five exhaust ports for maximum airflow Improved mouth vent enhances defogging and breathability Photochromic ShadeX visor compatible (sold separately) Moisture wicking liner is quick drying and odor resistant Emergency quick-release cheek pads for added safety Bluetooth ready (Bluetooth unit sold separately) Standards: Snell M2025D & DOT FMVSS 218 Approved Weight: 3.315 lbs / 1521 grams (approx, based on size medium solid color) HJC i11 Full Face Motorcycle Helmet Review from SportbikeTrackGear.com In this video the Van's break down the HJC i11 Full Face Helme

Also, the label itself is reflective, a very clever hidden safety measure

Aero helmets are generally not as well ventilated as more all-round models and this was the case with the RCR, although Van Rysel reckons that airflow improves in a head-up climbing position, without sacrificing aero performance once you set off downhill with your head down

Lazers high end models have nicely recessed strap anchors