Vertical Mount (90 Degree Elbow Mount) for GoPro Hero 9, 10, 11, 12, 13 Waterproof Case gopro 10 waterproof mount The zip ties act as

The zip ties act as a positive locking mechanism to ensure the mount stays adhered to the helmet even through the gnarest of gnar

Fits all helmet sizes

The 3M tape eliminates movement/wobble at the interface of the mount and helmet

I recommend another adapter if you are not planning to use a Media Mod with your GoPro:

or DJI Osmo Action 5 WITH a Waterproof Case

Vertical Mount (90 Degree Elbow Mount) for GoPro Hero 9, 10, 11, 12, 13 Waterproof Case gopro 10 waterproof mount The zip ties act asA vertical adapter for use with GoPro Hero 9, 10, 11, 12, and 13 Waterproof Case. This product is not compatible with any other GoPro models or accessories. This product is NOT compatible with a "bare" GoPro Hero 9, 10, 11, 12, and 13. This product ONLY works with a GoPro Hero 9, 10, 11, 12, and 13 WITH a Waterproof Case. 3D printed with ASA filament. Click the link below if you need an adapter to use with a bare GoPro Hero 9, 10, 11, 12, or 13: