I used it once. It's convenient because you can inflate it with air when you need it and fold it up compactly after use. It has a soft and comfortable cushioning, which helps to relieve fatigue in your legs even during long hours of sitting work or travel. ♦Color♦ Gray ♦Size♦ Approximately 37cm wide x 30cm deep x 20cm high ♦Material♦ PVC ❝Important Notes❞ ・The texture and color of the product in the photo may differ from the actual product depending on the LCD of your monitor. ・Please note that there may be some errors due to amateur measurements. ・To provide the product at a reasonable price, it will be shipped folded. Please understand that there may be creases or marks.