STAR UNION 1L Triangle Bike Frame Bag, Water-Resistant Reflective Storage Bag for MTB, Road & E-Bikes

Organized Triangle Storage for Everyday Riding

Keep your phone, wallet, keys, snacks and compact bicycle tools organized and within easy reach. The STAR UNION Water-Resistant Triangle Bike Frame Bag fits neatly inside the bicycle frame, providing practical storage without interfering with normal pedaling.

Why Riders Choose It

Dual-Side Storage

The bag features storage access on both sides, allowing commonly used cycling essentials to be separated and organized for quicker access.

Layered Interior Compartments

Internal dividers help organize small items such as keys, cards, a phone, compact repair tools and other daily riding essentials.

Compact Triangle Design

The 23 × 16 × 7 cm profile fits inside the bicycle frame triangle while helping maintain a clean, low-profile appearance.

Water-Resistant Construction

Made from polyester, EVA and PU materials, the bag helps protect its contents from light rain, road spray and everyday outdoor conditions.

Upgraded Sealed Zipper

The sealed zipper helps reduce the entry of rainwater, dust and road debris during commuting and recreational riding.

Reflective Side Details

Reflective elements on both sides improve visibility when illuminated during evening rides and low-light commuting.

Stable Three-Strap Installation

Three adjustable hook-and-loop straps secure the bag to the bicycle frame. Installation is quick, tool-free and suitable for different frame shapes.

Fit and Compatibility

Designed for most road bikes, mountain bikes, commuter bikes and e-bikes with sufficient space inside the frame triangle.

Please compare the available frame space with the product dimensions before ordering. Bicycle frame shape, suspension position, cables and bottle cages may affect compatibility.

Specifications

• Product Type: Triangle Bike Frame Bag
• Material: Polyester + EVA + PU
• Size: 23 × 16 × 7 cm
• Water Protection: Water-Resistant
• Storage Design: Dual-Side Pockets
• Interior Design: Layered Compartments
• Closure: Upgraded Sealed Zipper
• Installation: 3 Adjustable Hook-and-Loop Straps
• Safety Feature: Reflective Side Details
• Compatibility: Road Bikes, Mountain Bikes, Commuter Bikes and E-Bikes

Package Includes

• 1 × Water-Resistant Triangle Bike Frame Bag

Cycling accessories shown in the images are not included.

Frequently Asked Questions

Will it fit my bicycle?

The bag fits many road bikes, mountain bikes, commuter bikes and e-bikes. Please compare the available space inside your bicycle frame with the 23 × 16 × 7 cm product dimensions before ordering.

Is this bag fully waterproof?

The water-resistant materials and sealed zipper help protect the contents from light rain and road spray. The bag should not be submerged in water or exposed to heavy rain for long periods.

Does the bag affect pedaling?

The compact triangle design is intended to sit inside the bicycle frame. Correct strap positioning and sufficient frame clearance are required to prevent contact while pedaling.

What can I store inside?

The dual-side pockets and layered compartments are suitable for phones, wallets, keys, snacks, cards and compact bicycle repair tools.