A footrest with 3 adjustable height settings that can be stored compactly. Each one cost around 3000 yen. - Model Name: AirChill Premium Footrest - Assembly Time: 30 seconds - Height Adjustment: 3 levels (19cm, 35cm, 50cm) - Maximum Load Capacity: 90kg - Storage Size: Compact - Cumulative Sales: Over 1.2 million units It's hygienic because you can inflate it without using your mouth, and it's convenient because it can be set up in about 30 seconds. It's useful for stretching your legs and sleeping during long journeys. Thank you for looking. I bought two for airplane travel, but I ended up not using them at all because I changed my seat. I only unfolded one of the two in the living room to check it, but I haven't actually used it.