This is a leather-crafted smartphone case! The size is 20cm tall, 18cm wide, and 1.5cm deep. The depth will vary depending on the smartphone, but even thick ones should fit comfortably as it's leather. The design uses a belt that goes through the holes on both sides. I made it myself because I wanted a case that wasn't too bulky and was easy to use, so your phone wouldn't fall out even if you put it in quickly. It fits snugly against the body. By the way, I've also attached a D-ring so you can attach keys. I was originally making this for myself, so there are some imperfections and holes on the back. Please be aware of this. You won't see them when you're using it. It shows signs of use, but it goes very well with denim and American casual styles. It's made of natural oil leather, so you can enjoy the aging process as you use it and apply oil.