Used indoors 2 or 3 times. The instruction manual is entirely in English. Material: Aluminum alloy Height: 19-35cm Width: 14-22cm Weight: 4-10kg * Length is adjustable Comes with a chest harness. Will be shipped disassembled. * If you prefer to have it shipped assembled, please let me know in the comments before purchasing. However, due to shipping costs, it will be an additional 200 yen. Please understand that this item has been stored at home.