Silke,
You're welcome and I apologize because I haven't been here very long and I couldn't tell from your handle what sex you are. Now I know since you're interested in female CBs.
Also I took note of where you are located. You're lucky because NeoSteel is located in Germany and that is where I purchased my stainless steel CB. They are very professional and I would recommend them if you want to try a stainless steel belt. They do nice work and their product looks great which adds to the moment. You can get all sorts of accessories to make wearing the CB even more intriguing and pleasurable. Believe me, once you're locked into one of those devises, you are not getting out until the key is used. I think I mentioned earlier that you could even have your hands locked to the sides of the belt.