Hold Fast Half Frame Bag

Measure the inside of your bike's main triangle, specifically the top tube length and the depth of the frame. Compare these dimensions against the specific measurements provided for each capacity option to ensure the bag fits snugly without interfering with your water bottle cages.

The Hold Fast is designed to be low-profile, but compatibility depends on your frame size and bottle cage placement. If you have a smaller frame, you may need to use side-entry cages or smaller water bottles to maintain easy access.

The bag is constructed from Challenge ECOPAK recycled polyester, which is highly water-resistant and durable. While it will keep your gear dry during light rain or road spray, it is not fully submersible or seam-sealed, so we recommend using dry bags for sensitive electronics in heavy downpours.

It uses a series of adjustable hook-and-loop straps that wrap around your frame tubes. This mounting system is designed to be secure on rough terrain while allowing you to easily remove or reposition the bag as needed.

Yes, the strap placement is generally flexible enough to accommodate external cable routing. You may need to adjust the strap tension slightly to ensure the bag sits securely without putting pressure on your brake or derailleur lines.