Price reduced! Can be attached and detached while on the bicycle. Attaches to the headrest with two belts. ☆ Only compatible with adjustable headrests. ☆ Cannot be attached to seats without headrests or integrated seats, but can be used as a cover. Attach it to the seat and pull out the fabric from the pocket. When not in use, gather the fabric and store it in the backpack. No instruction manual included. My daughter purchased this and stored it at home. She is selling it because she changed jobs and no longer needs it. She says she never used it, but it has been stored at home. I would like to sell it to someone who understands this. If you are looking for one, how about this at a low price? Thank you.