Thank you for looking ♪ This is a folding mobile phone case made as a hobby by an amateur. Height: 13.5 cm Width: 7.5 cm Gusset: 2 cm Material: Synthetic leather Shoulder strap: 110 cm There are chalk pen marks remaining on the back, but they will naturally disappear with use. (Please understand that there may be slight errors due to amateur measurements.) It is not perfect like a mass-produced product, but I enjoy making it. Thank you for your understanding of handmade items.