Does Ab toning belts take inches off the waist even if it does get rid of the flab?

I read that ab toning belts are not that effective but it does tone the muscle to some extent and that if you have fat in the stomach the effect doesn't show cos the belt cant get rid of the fat. does that mean even if it doesn't look toned, it takes off at least a few inches off the waist? i can't do vigorous cardio exercises or walk alot as i have a back pain and my only goal is to reduce my waist. i do have a bit of belly fat but my only concern for now is to take some inches off the waist. will an ab toning belt help me at least a bit? im thinking of something like beauty works ab gym belt. argos has it for 24 pounds. has anyone used it? any recommended belts around that price?