It is very simple, just two strips of leather without any padding or any special decorations (except for the discrete Harley Benton logo). The strap is not the thinnest which is good and the material seems to be actual leather, which is very nice for the price. However, with heavier guitars it isn't very comfortable when you play for longer periods of time, I personally start to feel my shoulder after about 10 minutes of playing (my PRS style guitar is really heavy though).
For the money, it serves it's purpose and looks actually pretty nice.
It is a solid option for your backup guitar or if you have a really tight budget. However, I'd recommend buying the slightly more expensive but much more comfortable padded alternatives from HB, if you are willing and able to throw in some extra cash.