first off i got this for only $150 instead of paying $350 for a hypervolt. this works just as good for a fraction of the cost and is much lighter too. im ordering another to leave at the office. its quiet enough that i can use it at work!
Wife got me this last thursday. my calves have been killing me and this helps after my long runs. its almost addictive how good it feels. definitely my best bday gift ever!