I got it to for my road bike to increase carrying capacity for longer rides mostly for food. I didn't want a full-on handlebar bag like the Ortelieb handlebar bag w permanent mounting system. It easily carries several food bars, my phone and cashcredit card. It also has meshed outer pockets w elastic band closure for small nick nacks. I've only had it for a few months so I can't attest to the durability but I have a feeling the elastic cord closure will be the first thing to wear out so I'm very gentle with it. Also my knee touches the bag slightly when pedaling out of the saddle but it's a minor issue. All in all, great little, functional bag without adding too much extra weight and bulk to your bike.
I lost my water bottle cage when I installed a frame bag on my fat bike so I bought the feedbag to carry water. It is super easy to access even on more technical terrain and insulated to keep it from freezing. They're kind of pricey but worth it.