bike helmet mounts Mount Chin Strap Clamp for GoPro Insta360 Motorcycle Dirt Accessories, Head View Holder Attach for Go Pro Max Hero 12 11 10 9 8 7 Insta 360 X3 Go3 DELETION MILITARY GREEN BIKE z-101 color:[Fluorescent] Hi-Viz Green Designed specifically for the

bike helmet mounts Mount Chin Strap Clamp for GoPro Insta360 Motorcycle Dirt Accessories, Head View Holder Attach for Go Pro Max Hero 12 11 10 9 8 7 Insta 360 X3 Go3 DELETION MILITARY GREEN BIKE z-101 color:[Fluorescent] Hi-Viz Green Designed specifically for the

DELETION MILITARY GREEN BIKE HELMET WITH CLEAR VISOR & HALFFACE GLOSS FINISHING | eBay

Some manufactures have already shown interest in launching a line of helmets under this design umbrella

z-101

color:[Fluorescent] Hi-Viz Green

I found mention of it (but no pictures) in the August '77 issue of Bike World

Designed specifically for the Circuit WaveCel helmet