ROCKBROS Bike Trunk Bag

The bag secures to most standard rear bike racks using a four-strap system. This method provides a stable, wobble-free fit, though it takes a moment longer to attach than quick-release systems.

The bag itself is made of durable polyester but is not waterproof. However, it comes with a dedicated rain cover that you can pull over the bag during wet weather to keep your gear dry.

Yes, the bag is compatible with most e-bikes. As long as your e-bike has a standard rear rack, the strap mounting system will work perfectly.

When you need extra room, you can unzip the side compartments and fold them down to create two additional pannier-style bags. This allows the bag to expand up to its full 25-liter capacity for groceries or extra gear.

Yes, it is constructed with sturdy materials designed to maintain its structure even when not fully packed. This prevents the bag from sagging or interfering with your wheels while riding.

Yes, the main compartment includes removable dividers. You can rearrange them to create custom sections for your specific items, which helps keep your gear organized and prevents it from shifting during your ride.