Universal Battery Kit Power Bank Holder Monut Compatible for VR Oculus Quest 2 Head Strap(White Replacement Elite Strap) , Compatibly Multiple Sizes Mobile Power, 1 Set White（Not Include Power Bank）

Light, easy and sturdy. But it can easily slip out of the top of its own casing. I doubt you will be hanging upside down. But I would recommend, a small piece of electrical tape on the top opening to keep it secure. Maybe they can create a snap in mechanism for it.

its jest a 3d printed pice of plastic that probbly cost them like $1.

I fell in love with this product on its debut. During the pandemic, I began counted cross stitch Christmas stockings for my grandchildren. This product allowed me to work on the fine stitching for longer periods of time. The variety of lens are fantastic. Great value for the price. Product was well thought out with amazing detail. Highly recommend.

works just as described, fits perfectly, quality of plastic is top notch (no burrs, no wrong angles etc.), lets you put a battery on the back for extended play time, but best benefit is it balances the weight perfectly. To sum up, it works as described and is good quality.