Revelate Designs Mag-Tank Top Tube Bag

Yes, this is a bolt-on bag. It is designed to attach directly to the top tube bosses found on many modern gravel and bikepacking frames. Ensure your bike has the necessary mounting holes before purchasing.

The magnetic buckle is specifically engineered to keep the lid closed during bumpy rides while allowing for quick, one-handed access. It is reliable for standard gravel and trail riding, though it is not a sealed, waterproof zipper system.

With a 1.0-liter capacity, the bag is sized for essentials like snacks, tools, or a multi-tool. While it may fit some smaller phones, it is primarily designed for quick-access gear rather than acting as a dedicated phone storage unit.

The bag is highly water-resistant, but it is not fully waterproof. It features a removable TPU liner that helps protect your gear from light rain and road spray, but it should not be submerged.

The high-visibility yellow interior is a deliberate design choice to help you quickly locate small items like batteries, keys, or energy gels, which are often difficult to spot in dark, black-lined bags.

The Mag-Tank features a removable TPU liner, which makes cleaning straightforward. You can simply pull the liner out, wipe it down or rinse it off, and let it dry before reinserting it into the stiffened shell.