Updated for 2026 — This article has been reviewed and updated with the latest recommendations.
The frame bag is the centerpiece of a bikepacking setup. It fills the triangle formed by the top tube, seat tube, and down tube, keeping weight low and centered where it affects handling the least. A well-fitted frame bag can hold 5 to 12 liters of gear depending on your frame size, and that is enough for your heaviest and most awkwardly shaped items: tools, cook kit, food, and a water bladder.
The challenge is that every bike frame is a different shape and size.
An off-the-shelf bag that fills a large frame triangle will leave gaps in a small frame, and a bag sized for a compact frame will not fit a larger bike. Here is what to look for and which bags do it best.
Revelate Designs Ripio Frame Bag
Revelate is one of the original bikepacking bag companies, and the Ripio is their full-frame option. It comes in four sizes (small through XL) to fit a range of frame triangles.
The fit is not custom, but Revelate publishes detailed sizing guides and the sizes cover most common frame geometries reasonably well.
The bag uses a VX21 laminate fabric that is waterproof, abrasion-resistant, and light. Access is through a zipper on the drive side of the bike, which keeps it away from chain grease. Internal organization is minimal (one divider), but the simple layout accepts oddly shaped items that compartmentalized bags sometimes reject.
Mounting uses Velcro straps that wrap around the frame tubes.
The straps are wide enough to distribute load without damaging carbon frames (with appropriate frame protection tape). Weight is around 220 to 280 grams depending on size. Price runs 160 to 200 dollars.
Ortlieb Frame-Pack
Ortlieb brings their legendary waterproof construction to the frame bag market. The Frame-Pack uses a roll-top closure instead of a zipper, making it genuinely waterproof rather than water-resistant.
If you ride in consistently wet conditions, this is a significant advantage because water seeping through zippers is the most common failure point in bikepacking bags.
It comes in two sizes (4L and 6L) and mounts with adjustable Velcro straps. The smaller size is more of a half-frame bag, but the 6L version fills a good portion of most medium to large frames. Build quality is exactly what you expect from Ortlieb: bomb-proof and overbuilt. Price is about 120 to 150 dollars.
Rockgeist Custom Frame Bag
For the best possible fit, a custom frame bag is the way to go.
Rockgeist is one of several cottage manufacturers that will build a bag to your exact frame dimensions. You provide measurements (they include detailed instructions), choose your fabric, color, zipper placement, and pockets, and they build a bag that fits your specific bike like a glove.
Custom bags maximize capacity because there are no gaps between the bag and the frame. Every cubic centimeter of space is usable.
The downside is lead time (4 to 8 weeks typically) and cost (200 to 300 dollars depending on options). But if you are serious about bikepacking and plan to use the same bike for years, a custom bag is a one-time investment that pays for itself in better fit and more usable space.
What to Pack in a Frame Bag
The frame bag is the best location for heavy items because it keeps weight centered and low.
Pack your cook kit, tools, repair supplies, and dense food items here. A flexible water bladder in the frame bag works well on bikes without a bottle cage that fits inside the frame triangle.
Avoid packing items you need to access frequently, unless the bag has a side panel or top pocket that opens easily while riding. Most frame bags require you to stop and partially dismount to access the main compartment, which is fine for items you only need at camp or during a repair stop.
Fit Considerations
Check that the bag does not interfere with your water bottles, dropper post lever, or knee clearance when pedaling.
On smaller frames, a full-frame bag may rub against your inner thighs. If that happens, look at a half-frame or partial-frame bag that leaves the top portion of the triangle open.
Protect your frame from strap rub. Helicopter tape or adhesive frame protectors under every contact point prevent paint damage and reduce creaking. This is especially important on carbon frames where strap rub can eventually damage the surface.
A full-frame bag transforms your bike into a practical touring machine. It carries the heaviest items where they affect handling the least, freeing up your handlebar and seat bags for lighter, bulkier items like sleeping gear and clothing. Getting the right fit is worth the effort, whether that means measuring carefully for an off-the-shelf bag or investing in a custom build.
