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A frame bag tucks into the triangle of your bike or along the top tube, putting essentials close at hand while keeping weight centered and low. The right bag depends on your frame size, how much you carry, and the weather you ride in. Some are slim and aerodynamic; others offer large volume for bikepacking gear.

We compared 15 frame bags across three styles: full-frame bags for maximum storage, triangle bags for everyday rides, and phone-ready bags that let you use your device on the go. For more on bag types, see our bike bag types guide and bikepacking bags guide.

Every specification on this page comes from each product’s Amazon listing (item data from Amazon’s Creators API), checked on 1 November 2026. We have not used these products ourselves, so the picks are based on published specifications only.

If you need under-seat storage, check our best bike saddle bags comparison. For handlebar-mounted options, see the handlebar bag guide.

Quick picks

How we chose these

  • Capacity and fit, Frame bags range from under 1L to over 14L. Measure your frame’s top tube, seat tube, and down tube to ensure the bag fits without interfering with water bottle cages or your knees.
  • Water resistance, Look for sealed zippers, coated fabrics, or IPX ratings if you ride in rain. Some bags are only water-repellent, while others claim full waterproofing.
  • Mounting security, Most bags use Velcro straps; some add rigid plates or multiple attachment points to prevent sagging and sway on rough terrain.
  • Material and durability, Nylon, Oxford fabric, and laminated materials are common. Higher denier counts and reinforced seams often indicate longer wear.

All claims about materials and performance are provided by the brands.

Comparison table

Product Capacity Material Water Resistance Best for
1. Moosetreks Full Frame 14L (Large) Ripstop nylon with TPU Water-resistant Bikepacking
2. WOTOW 2L 2L 600D Oxford Water-resistant Night visibility
3. NDakter 2L 2L Carbon fiber material Water-resistant Everyday carry
4. Rhinowalk 1.7L 1.7L Triple-layer waterproof fabric IPX4 waterproof Aero-conscious riders
5. Ibera 5L 5L 420D nylon Water-repellent High capacity
6. ROCKBROS 1.2L 1.2L PU+Polyester with foam Not stated Lightweight
7. NDakter 1.2L 3-in-1 1.2L Waterproof fabric Waterproof Versatile use
8. ROCKBROS 3L 3L 840D nylon 95% water-resistant Rainy rides
9. ROCKBROS 1.7L 1.7L Waterproof materials Waterproof Slim fit
10. Csoalpo Not stated Oxford fabric Waterproof Basic storage
11. Danuosie 2L 2L 600D Oxford with PU Water-resistant Night safety
12. Rhinowalk 0.9L 0.9L Nylon and polyester Waterproof Minimalist
13. Rhinowalk 2.1L 2.1L Water-resistant fabric Water-resistant Organization
14. ROCKBROS Phone Bag Not stated Not stated Water-resistant Phone use
15. Lamicall Phone Bag Not stated Not stated Waterproof Quick access

Capacities and materials are as stated by each brand. ‘Not stated’ means the listing did not provide that information.

Full Frame Bag

A full frame bag fills the main triangle for maximum storage, ideal for bikepacking and touring.

1. Moosetreks Bike Full Frame Bag: for bikepacking and touring

Moosetreks offers this full frame bag in three sizes; the large holds 14L. It is made from ripstop nylon laminated with thermoplastic polyurethane, which the brand says is durable and water resistant. Two zippered compartments with a removable divider help organize gear.

  • Also available in 6.5L and 12L sizes (Moosetreks)
  • Attaches with strong Velcro straps (Moosetreks)

Triangle Frame Bags

Triangle bags fit in the corner of the frame, offering a balance of capacity and a slim profile for road, gravel, and mountain bikes.

2. WOTOW Bike Frame Bag: for commuting and night rides

WOTOW says the bag uses 600D Oxford fabric with a PU coating for water resistance and durability. Reflective areas on both sides aim to improve nighttime visibility. Three hook-and-loop straps let you mount it under the seat or near the handlebar.

  • Seam-sealed zipper (WOTOW)
  • Reflective panels on both sides (WOTOW)

3. NDakter Bike Frame Bag: for road and commute bikes

NDakter uses a carbon fiber material with high-frequency seamless welding on the zippers to block rainwater. The bag measures 10.63 x 7.08 x 2.25 inches and holds 2L. Three adjustable Velcro straps secure it to the frame.

  • Dimensions: 10.63 x 7.08 x 2.25 in (NDakter)
  • Seamless welded zippers (NDakter)

4. Rhinowalk Bike Triangle Frame Bag 1.7L: for aerodynamic riding

Rhinowalk says this bag uses triple-layer waterproof fabrics and meets IPX4 standards. Its 65mm width is designed to reduce wind drag and avoid knee contact. Nine adjustable strap positions and reinforced seams provide a secure fit.

  • IPX4 waterproof rating (Rhinowalk)
  • Weight: 1.04 lb (Rhinowalk)
  • Dual-side compartments with cable port (Rhinowalk)

5. Ibera Bike Frame Bag: for riders needing more storage

Ibera’s frame bag provides 5L of storage with a top zipper access and a slim outer pocket. The brand uses water-repellent 420D nylon and adds reflective trim for visibility. Multiple hook-and-loop fasteners keep it stable on rough terrain.

  • Dimensions: 16 x 17 x 11 in (Ibera)
  • Reflective trim (Ibera)

6. ROCKBROS Bike Frame Bag 1.2L: for minimalists

ROCKBROS says this 1.2L bag has a three-layer shell: PU+polyester outer, 5mm foam middle, and polyester inner. It weighs 0.35 lb and uses three straps for mounting. Reflective trim is included for night safety.

  • Weight: 0.35 lb (ROCKBROS)
  • Three-layer construction (ROCKBROS)

7. NDakter Bike Frame Bag 1.2L 3-in-1: for versatile mounting

NDakter’s bag can switch between a triangle frame bag and a top tube bag by removing the top Velcro. It holds 1.2L and uses waterproof fabric with a reflective design. Two side zipper pockets offer extra organization.

  • Converts to top tube bag (NDakter)
  • Side zipper pockets (NDakter)

8. ROCKBROS Bike Frame Bag 3L: for wet weather riding

ROCKBROS uses 840D nylon with seamless heat-press technology to achieve 95% water resistance. The bag has a rigid bottle plate to maintain shape and dual-side compartments. Reflective logos on both sides aid visibility.

  • 95% water resistance (ROCKBROS)
  • Rigid bottle plate (ROCKBROS)
  • Slim 6mm profile (ROCKBROS)

9. ROCKBROS Bike Frame Bag 1.7L: for gravel and road bikes

This ROCKBROS bag features high-frequency seamless welding and waterproof materials. A built-in PP support plate prevents sagging. The narrow profile is designed to minimize leg contact on road and gravel bikes.

  • Seamless welded construction (ROCKBROS)
  • PP support plate (ROCKBROS)

10. Csoalpo Bike Frame Bag: for basic storage

Csoalpo says its bag uses Oxford fabric that is waterproof and anti-scratch. Three Velcro straps hold it to the frame. A wide-opening zipper provides easy access.

  • Oxford fabric (Csoalpo)
  • Wide-opening zipper (Csoalpo)

11. Danuosie Bike Frame Bag: for night visibility

Danuosie uses 600D Oxford fabric with a PU coating and seam-sealed zippers for water resistance. Large reflective areas on both sides aim to increase visibility. The bag is 2.2 inches wide to reduce leg rub.

  • Width: 2.2 in (Danuosie)
  • Seam-sealed zippers (Danuosie)

12. Rhinowalk Bike Triangle Frame Bag 0.9L: for ultralight setups

Rhinowalk’s smallest frame bag holds 0.9L and uses layered nylon and polyester fabrics with a tear-resistant mesh core. It has three pockets with YKK zippers and oversized pull tabs. Two mounting methods are offered.

  • YKK zippers (Rhinowalk)
  • Three zippered pockets (Rhinowalk)

13. Rhinowalk Bike Frame Bag 2.1L: for organized storage

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Rhinowalk Bike Frame Bag, Waterproof Bike Triangle Bag, Bicycle Under Top Tube Bag, Corner Pouch Storage Bag, Cycling Accessories, Road Bike Accessories, 2.1L, Black

Rhinowalk Bike Frame Bag

Rhinowalk
View on Amazon
Pros & Cons

Pros

  • Dual-sided organization
  • Water-resistant with zipper cover
  • Fits S size frames and up

Cons

  • May interfere with water bottle placement
  • Not fully waterproof
  • Weight not stated

Rhinowalk’s 2.1L bag has a dual-sided design: one side is a deep pocket with two mesh pockets, the other a shallow pocket for small items. It uses water-resistant fabric with a zipper cover and SBS zippers. The brand notes it fits frames with a top tube at least 16.5 inches long.

  • Requires top tube ≥ 16.5 in (Rhinowalk)
  • SBS zippers (Rhinowalk)
  • Dual-sided compartments (Rhinowalk)

Phone-Ready Frame Bags

These bags include a clear, touch-sensitive window so you can use your phone for navigation without removing it from the bag.

14. ROCKBROS Phone Front Frame Bag: for phone navigation

ROCKBROS designed this front frame bag to hold phones up to 7 inches behind a TPU touch-sensitive window. It has an earphone hole and reflective tapes. The bag is water-resistant and attaches with straps.

  • Fits phones up to 7 inches (ROCKBROS)
  • TPU touch window (ROCKBROS)

15. Lamicall Bike Frame Bag: for quick-release phone storage

Lamicall’s bag mounts on the top tube or stem with a quick-release clamp that rotates 90 degrees. It fits phones under 7 inches and has a sensitive touch window. The brand claims waterproof construction.

  • Quick-release clamp fits 12-45mm tubes (Lamicall)
  • Dimensions: 8.2 x 4.3 x 4.7 in (Lamicall)

Which one fits you

Your situation Look at Why
Bikepacking or touring with lots of gear Moosetreks Full Frame Bag (14L) Large capacity and low weight distribution for stable handling on long rides
Wet weather and need reliable waterproofing Rhinowalk 1.7L (IPX4) or ROCKBROS 3L (95% water-resistant) Sealed construction and high water-resistance ratings protect gear in rain
Want to use phone for navigation ROCKBROS Phone Bag or Lamicall Phone Bag Touch-sensitive windows and dedicated phone compartments keep the device accessible
Minimalist who only carries a few items Rhinowalk 0.9L or ROCKBROS 1.2L Compact and lightweight, enough for keys, cards, and a gel

Practical tips

  • Measure your frame’s top tube, seat tube, and down tube before buying. Many brands provide sizing guidance; a bag that is too large can rub your knees or block water bottle cages.
  • If you ride in heavy rain, look for bags with sealed zippers and IPX ratings rather than just water-repellent coatings. Even then, consider using a dry bag inside for sensitive electronics.
  • A bag with a rigid internal plate or multiple strap points will sag less when fully loaded, which matters on bumpy trails.
  • Reflective details are helpful for commuting and night riding, but they are not a substitute for proper bike lights.

FAQ

How do I know if a frame bag will fit my bike?

Measure the inside lengths of your top tube, seat tube, and down tube. Compare these to the bag’s dimensions or the brand’s sizing chart. Some bags, like the Rhinowalk 2.1L, require a minimum top tube length of 16.5 inches.

Are frame bags waterproof?

It varies. Some, like the Rhinowalk 1.7L, carry an IPX4 rating. Others, like the Ibera 5L, are only water-repellent. Check the brand’s description for terms like ‘waterproof,’ ‘water-resistant,’ or ‘IPX’ ratings.

Can I still use my water bottle cages with a frame bag?

It depends on the bag and frame size. Some bags, like the Rhinowalk 2.1L, may interfere with larger bottles. The brand suggests using a 620ml or smaller bottle, and a frame size of at least M (54) if you need two bottles.

What is the difference between a frame bag and a top tube bag?

A frame bag typically fills the main triangle of the frame, while a top tube bag sits on top of the top tube. Some bags, like the NDakter 3-in-1, can be used either way. For more details, see our bike bag types guide.

Sources

Specifications from each product’s Amazon listing, checked 1 November 2026: Moosetreks Bike Full Frame Bag, WOTOW Bike Frame Bag, NDakter Bike Frame Bag, Rhinowalk Bike Triangle Frame Bag 1.7L, Ibera Bike Frame Bag, ROCKBROS Bike Frame Bag 1.2L, NDakter Bike Frame Bag 1.2L 3-in-1, ROCKBROS Bike Frame Bag 3L, ROCKBROS Bike Frame Bag 1.7L, Csoalpo Bike Frame Bag, Danuosie Bike Frame Bag, Rhinowalk Bike Triangle Frame Bag 0.9L, Rhinowalk Bike Frame Bag 2.1L, ROCKBROS Phone Front Frame Bag, Lamicall Bike Frame Bag. Makers can change specifications; check the product page before you buy.