Review on 🔒 Enhanced Chase Harper USA 650M Magnetic Tank Bag - Highly Water-Resistant, Tear-Resistant, Industrial Grade Ballistic Nylon with Anti-Scratch Rubberized Polymer Base, Superb Neodymium Magnets by Bill Maki

Strong magnets, don't worry they will come loose even at 140 km/h. Used as a tank and tail bag. Easily holds water bottles, gloves, shirts, etc. Very durable nylon. The only downside is that the side pockets are mesh, nylon would have been better, but a tank bag is incredibly useful and perfect for day runs. I've used everything from Gold Wings to vintage bikes from the 70's with complete satisfaction.