Both of them are useless. The principle of liposuction needle is only to dehydrate fat cells, so it works well in the first few months, but it will rebound after a few months and needs to be played many times. I don't know the principle of the fat exploder, but I haven't seen any effect after seeing my friends tossing for months. As far as I know, the only effective way is liposuction. Of course, you have to confirm whether you have muscular legs or you really have too much fat.