Review on Roswheel Essential Series Convertible Bike Trunk Bag/Pannier - Perfect For Cycling Commuters! by Alex Pollard

You can see it in the stitching, the way the zippers feel when opening/closing, the overall construction. This bag detaches in just a few seconds without having to bend over to look at the underside so you can undo the velcro straps, and re-attaches just as easily. If that doesn't sound like a big deal, look at the velcro locations on other bags. Someone who rides put some thought into the design. I'll be adding other bags in this same line. Bar bag and seat bag at minimum.