this product appear to be well make . it be not flimsy and all the part work well together . but that be it for the good news . the handle be make of hard , slippery plastic that make it difficult to hang on to after even the slightest sweat . in addition , the handle be oddly shape , make it very uncomfortable to hold on to with one or two hand . I be not sure what they have in mind when they design the handle . as far as the benefit of use , I can not comment as the machine be just too uncomfortable to use long enough to give a review on this point .