I got one of these two years ago and ordered this second one to balance out my bike when I get a bigger haul of groceries from the store. This new one has a small exterior pouch with a Velcro flap for a wallet or phone, unexpected and nice!
I just hook the panniers on the side or front of my shopping cart and when I check out I put all the food into the pannier, no need for a grocery bag. The handles are sturdy and easy to pick up even a heavy load, I'll pack about 20 pounds in each without a problem. Aside from groceries, it fits a big laptop just fine and since I am allowed to park my bike in my office I leave the pannier within reach and grab stuff as needed.
I use this for shopping and commuting. The bag holds a full standard grocery bag load and I just drop my computer bag in for the commute. When empty, it is a bit bulky and prone to hop if your rails are wide, and can catch your heel.
Product made from good quality materials. They are easy to attach and remove as needed but are not going to fall off while riding. I pack them full of a weeks worth of groceries with no problems. I love that they fold flat wile on the rack if empty. The reflective accents are a nice touch. Another home run for Banjo Brothers. Great bag at a great price.