Revelate Designs Mag-Tank

The magnetic closure is surprisingly robust and designed to stay shut even on bumpy gravel or washboard sections. While it isn't a sealed, waterproof zipper, the magnetic snap is strong enough to keep your gear inside during standard bikepacking and gravel riding.

The Mag-Tank features a slim, tapered profile specifically engineered to minimize knee contact. Most riders find it stays well out of the way, though fit can vary slightly depending on your bike's geometry and your pedaling style.

It is constructed from Dimension Polyant X-Pac, which is highly water-resistant and durable. While the bag itself handles light rain and splashes well, the magnetic closure is not airtight, so it shouldn't be considered fully submersible or waterproof in heavy downpours.

No, the Mag-Tank uses a versatile strap-based mounting system that attaches securely to both the top tube and the stem. This makes it compatible with almost any bike frame, regardless of whether you have top tube braze-ons.

Yes, that is the primary design advantage of the Mag-Tank. The magnetic system allows you to flip the lid open and snap it shut instantly with one hand, making it ideal for grabbing snacks or your phone without breaking your rhythm.