Review on 📱 Gear Beast Running Backpack: Lightweight Vest & Phone Holder for Jogging, Hiking, and Cycling - Black, Compatible with Most Smartphones by Cory Mosley

I've used it for wireless VR rather than running, but hopefully it should be worth MORE than anything else in this review. I jump, swing my arms, crouch and pretty quickly forget I'm carrying this thing despite the large battery. For anyone thinking of using this for VR, I recommend the AUKEY 30,000mAh battery, it fits perfectly in your case. And judging by that, the max you can fit in this bag is about 2.3 x 1.4 x 0.45 inches. It's a little annoying to adjust the straps to fit snugly around my chest. For some reason, the hardest part for me was getting dressed on the spur of the moment, but maybe that's the point. I wish I didn't have to take this thing off to adjust the straps only to put it back on and realize I need to tighten it a bit.