When properly installed, the backpack is securely fastened to the bike and remains highly stable. Since it stays close to the rider’s body and aligns with their center of gravity, even at maximum load, it does not affect riding stability. The overall riding experience remains unchanged, ensuring full safety.

The backpack features the Penta-lock system (Telescopic support rod + Locking strap + Fastening strap), providing five locking points. Once mounted on the bike, it remains firmly secured, even during high-speed or downhill biking. The release mechanism is carefully designed to prevent accidental detachment.

The backpack boasts excellent load-bearing capacity. The recommended maximum load is 15kg, though static testing has demonstrated the ability to hold over 80kg of items.

Due to the backpack’s specific mounting position, it may not be possible to get on and off the bike from the rear of the saddle over the backpack. It is recommended that you get on and off the bike from the front of the saddle instead (refer to relevant videos for details).

The backpack is designed with reflective materials and a mounting slot for warning lights. It is recommended to use a clip-on warning light, which can be securely attached under the saddle during regular use and easily transferred to the backpack when needed.

The backpack is compatible with all bicycles, including road bikes, mountain bikes and folding bikes. However, to ensure proper installation, the bike must meet three basic requirements:
• The seat post must be round.
• The saddle must be a dual-rail saddle.
• The seat post must have at least 2 inches of exposed space for mounting the Seat post components, and the component’s parallel extension line must be at least 1 inch higher than the rear wheel.

Our attachment system is lightweight and visually unobtrusive, ensuring the bike’s original aesthetic is maintained. The whole setup on the bike weighs about 150g, including parts on the seat post and under the saddle.

The installation is straightforward and can be quickly completed by following our instruction manual. It only needs to be installed once. A full set of installation tools is included with the backpack, so no additional tools are needed.

The process is quick and effortless. Under normal operation, mounting the backpack to the bike takes about 10-15 seconds, while dismounting takes around 5-10 seconds, ensuring a hassle-free experience.

Compared with traditional backpacks, ours has a slightly different internal structure, but it looks identical to a regular backpack on the outside.

Compared with traditional backpacks, ours has a slightly different internal structure, but it looks identical to a regular backpack on the outside.

Different styles use different materials, but all the materials are eco-friendly, durable, and of high quality.

As a backpack designed for cycling, all fabric choices emphasize water resistance. Additionally, a custom waterproof cover is included for extra protection. We are also developing a fully waterproof version for extreme conditions.