Blackburn Outpost Frame Bag

Because bike frames vary significantly in geometry, you should measure the inside of your bike's main triangle before purchasing. The Outpost is designed to be versatile, but it works best on frames with a relatively open main triangle. Compare your measurements against the bag's dimensions to ensure a proper fit.

It depends on your frame size and bottle cage placement. On smaller frames, a full-size frame bag often occupies the space where bottles are usually mounted. You may need to use side-entry cages or relocate your bottles to other parts of the bike, such as the fork or seat post.

Yes, the hook-and-loop strap system is highly adjustable. The straps can be positioned along the bag's perimeter to align with your frame tubes, allowing you to secure it tightly regardless of whether your bike has oversized aluminum tubing or slimmer steel tubes.

The bag is constructed from durable, weather-resistant materials designed to handle rugged bikepacking conditions, but it is not fully waterproof. While it will protect your gear from light rain and road spray, we recommend using dry bags or waterproof stuff sacks inside for items that must stay completely dry during heavy downpours.

When installed correctly with the straps pulled taut, the bag remains stable. However, if you are carrying heavy items, ensure the weight is distributed evenly and the straps are cinched down firmly against the frame to prevent any side-to-side movement.