Used about 4 times. Selling because I'm upgrading to a larger capacity bag. It's practically new. https://amzn.asia/d/fVAWMPE Easy to attach waterproof bag with the included belts. Attach the two seat adjustment belts to the rear seat, connect the hooks of the belts to the D-rings on the main body, and secure the bag with the auxiliary belts in a downward diagonal direction, such as to the tandem step stays, at the position where the bag is most stable. Product Number: NB-92 Price: ¥6,050 (tax included) Color: Black Material: PVC/Polyester Size: 28cm (H) x 42cm (W) x 18cm (D) Capacity: 12L Accessories: Seat mounting belts x 2, Auxiliary belts x 2