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The Hold Fast Half Frame Bag allows you to take advantage of the space in the triangle of your bicycle frame, providing a cozy home for awkwardly shaped essentials like a pump, tent poles, or a hydration bladder. Talk about practical storage! Choose from three different sizes to ensure the right fit for your bike.

2.75 L: 16.5” X 3.75” X 2.25”

3.5 L: 18.75” X 4.25” X 2.25”

4 L: 20.25” X 5” X 2.25”

The Hold Fast Frame Bag is our number one solution for smart, inconspicuous storage on your bike. The main compartment is accessed via a drive side water-resistant zipper. A smaller zipper pocket on the non-drive of the bag is perfect for a snack or cell phone. To accommodate a variety of frames, there are webbing daisy chains on the top panel for flexible attachment points and extra long fixed Velcro straps intended to be cut-to-fit to your needs. On the top of the bag we added an exit port for a hydration hose or power cable, and along the underside of the bag there is a webbing daisy chain that runs the length of the bag for additional lash points for items like a pump, tent poles.

Find our sizing guide under the “Specs” tab to ensure the best possible fit with your frame.

The Hold Fast Half Frame Bag made in Surabaya, Indonesia out of Challenge ECOPAK 100% recycled polyester. This pack contains roughly 5-7 plastic bottles rescued from ocean beaches.

Materials List

• Challenge Sailcloth ECOPAK™ EPLX400 

• RBC450RS (Recycled Bag Cloth Ripstop 450D)

Feature Callouts

• Large, main pocket and small, external organizer pocket
• YKK water-resistant zippers
• 0.125″ closed cell foam for padding at top tube and downtube
• Built-in nylon mesh interfacing along top tub to add rigidity and support.
• One-wrap velcro attachment straps with flexible mounting points for top tube
• Hydration hose/cable port on top panel of bag