1. Large capacity: the capacity of the bike tail bag can be adjusted from 3L to 10L. It can store all kinds of items needed for long distance driving. It can carry up to 8 kg, but does not hit the tire. It is a good helper for long distances.2. Versatile: 4 waterproof side pockets for easy storage of small items. An elastic rubber cord on top of the packaging for storing additional items. The warning light can easily be placed on the back.3. Portable & Lightening: This is a great beanbag for bike packing that offers a simplified way to carry your items without the need for a rear frame. Made from lightweight, waterproof and reliable materials, hook and loop fasteners and buckles are easy to install and remove without the need for tools.4. Practical and comfortable: The improved saddle and compression strap reduce the pendulum effect associated with large rear payloads, thus ensuring a comfortable driving experience on long journeys and reducing flexibility and turbulence.5.Safety and stability: The seat pocket is made of high quality polyester. In light rain it is tear-resistant and waterproof. Reflective strips are placed on both sides of the bag to ensure night driving and improve safety. The tail hook design makes it easy to attach warning lights.