This is a Tsukuri-michi backrest and comfort seat cushion. You won't get tired even after sitting for long periods. Backrest: Width 30cm, Height 38cm, Thickness 10cm Comfort Seat Cushion: Width 39cm, Depth 36cm, Thickness 9cm These are unused items I received as a gift, but they have been stored at home. Please understand this before purchasing. If you are willing to pay for the shipping, I can discount the commission fee, which will likely make the total payment amount cheaper. Please contact me if you are interested. *The chair in the photo is not for sale.