The sporty bag is waterproof and features many useful functions. This bag has two waterproof, foldable side pockets. The upper compartment can also be expanded. The volume can be increased from 9 liters to up to 36 liters in this way. Additionally, the bag has an insulated compartment for a drink bottle and extra dividers with which you can split the main compartment. To keep food and beverages cool, there are two compartments where cooling elements can be inserted. In an extra compartment, you will find an X-shaped rubber band. This elastic band can be secured with click fasteners over a helmet. This way, you can also take your helmet with you!