Review on FANCYWING Waterproof Backpack Rain Cover | Reflective Strap | Upgraded 10-90L Non-Slip Rainproof Cover for Hiking, Camping, Hunting, Cycling in Rain, and More by Chris Chincuanco

This is great for my needs. If it's above my drone backpack and a couple of them are tethered to the outside, no problem. Pros: - Has a 4-way strap to attach it to the backpack - Has a drawstring to tighten it around the backpack - It's bright and has a reflective strip to make it highly visible in low light conditions. - Folds up into its own small compartment so it can be easily attached to your bag or tucked away somewhere. Drone backpack or any other backpack you don't want to get wet. Would recommend to anyone who needs something like this, your straps can go through so it sits comfortably on your back as usual, it just covers so things don't get wet inside.