To prevent any issues, please be sure to read my profile before making a purchase. Thank you for your understanding. Opening (zipper part) is approximately 20cm, bottom width is 11.5cm, and depth is 13.5cm. Please note that there may be some error due to amateur measurements. I haven't used it much and it's generally in good condition, but there is some wear on the zipper. Please refrain from purchasing if you are looking for a perfect item.