I pick up the Shake Weight at a target store while I be stay over the holiday at a hotel and the fitness center have close . I want to do some kind of workout in my spare time and the price , though a little high , a little over $ 30 after tax , seem in line . I be not sure what to expect base on the vary review I have read here , but from the very first use , I could tell it be a quality item and could immediately feel that this isometric type of exercise would be beneficial . it be . in two word : it work . it be seemingly well make , easy to use , and the dvd demonstrate several different way of use it . what they show on the tv ad be also accurate : after do this exercise for even five minute , you will `` feel the burn , '' as they say , and , in fact , I feel it throughout not only my upper body , but my lower body as well . it also seem to tone you stomach and ab and definitely give you a great workout for you upper body . this should not be you only source of exercise , but for quick , at home , or on the road , use , it be a great product - and probably have make its creator a multi-millionaire by now . you can not wrong with it . and , what be more , it be surprisingly lightweight - I be able to fit it easily into my suitcase - which make it a great workout product to take with you on the road . I highly recommend this product . I once buy a small rowing device year ago - and it still work well 25 year later . I have a feeling this product will also last . there be no battery . and it seem to be both well build and safe to use . you get a fine workout from it - a great augment to you other training workout .