New, unused. Footrest Swing Ideal for long journeys on airplanes, bullet trains, etc. Can be used on vehicles with built-in tables. Size (Approx.) Width 34 x 17 x Thickness 0.8cm How to Use ① Hang it on the table leg and adjust to your preferred height. (Can be used with the table either extended or folded.) ② Pull out the heel belt and place both feet on it. It will be stable if you put your heels in the space between the footrest mat and the heel belt. (See Figure 1) (For long periods of use, shifting your feet forward and backward will allow for more relaxed use.) Shipped via Mercari courier service.