First of all, the price is very good. I bought it for 37,000 won at the airport. After putting it on here and there, it seemed to be the perfect shape and size. I liked it so much that I gave it to my mom. So, I bought mine again from gvg. The price is about 20,900 won with discounts. Why is the size perfect? A small umbrella, wallet, cell phone, and passport all fit together. It's not bumpy. Because there is a bit of width horizontally at the bottom, but it is the perfect size. It's nice that there's a front pocket so you can get something out quickly. The zipper is very strong, and although it rained heavily for 4 days in Hong Kong, it was made of waterproof material so I could just shake it off. It is light in weight. It's inconvenient to have multiple pockets for no reason. It's the best when it goes in and comes out. I recommended it to a younger sibling I know, and he bought two, one for himself and one for his daughter. I highly recommend it for travel/daily use. The design is also stylish! Perfect Simple Honey, a very well made product.