I received the belt and tried it immediately on a relaxed 6km run. I was thrilled because having used waist bags and armbands for many runs, short and long distances, with the belt I intentionally put my phone and keys and it felt like I had nothing on me. I definitely recommend it! The only thing I would like to mention is that it didn't say anywhere if there is a size, so when I ordered, I simply got the belt which is quite tight and difficult to put on. Of course, that's also the point for it to stay stable on the waist. But I don't know how easily it would fit on someone slimmer than me. Also, as you sweat, the belt sweats too, although it dries easily and doesn't transfer to the things inside, but regardless of what you wear, you will sweat during long distances.