The seat is made from discarded spool assembly, and can customize the size of the seat, and then spools one by one connected. You can also customize the seat height, the completion of this work is very simple and just need a simple link that will spool. As for this seat Where can I use? If you travel, carry such a seat must be a good choice, because all of the spools are the same shape, similar to the cone, can be easily set with each other to bring the time is very save space. Will be used only when the trouble some, it takes time to assemble.