Good for back injury + arthritis related muscle cramps -- small enough for traavel
I have two herniated discs in my lower back, osteoarthritis in the areas surrounding them, and over time most of the muscles between my waist and my knees became permanently tense as an involuntary reaction to the pain.  This plus the resulting sciatica made walking difficult and painful. Either long drives or airplane rides make the muscle tensing much worse.  This sports massager has done a good job of keeping the muscles in my back, hips, and upper legs less tense.  At home I use a more elaborate (and larger and heavier) massager; I bought this one for travel.
Rating: 5 stars