This is a Doppleganger brand bike travel bag. It folds up small as shown in photos ① and ②, and can be attached to your bike's handlebars for transport. When using trains, etc., you can unfold it as shown in photos ③ and ④ to carry a folding bicycle. Shipping will be done with the bag folded as small as possible and in simple packaging. This is not a new item, but a used one. Please make your decision based on the photos, and consider it as non-returnable and non-refundable.