tratac activeball - high intensity fitness vibratiing ball / peanut massager myofascial release muscle back pain & recovery deep tissue massage ball (red) tratac <p><strong>tratac active ball</strong> is a fast recharging portable equipment that allows you to apply pressure to treat muscle dysfunction. and this is efficiently designed for self-myofascial release & deep tissue massage.</p> <p>it is a versatile exercise product that can be used in the gym, the home or rehabilitation center. advantages of silicon material</p> <p> </p> <p>- high temperature stability - resistance to aging & chemical assault </p> <p>- high thermal insulation </p> <p>- more durable than rubbers or elastomers functions of the button </p> <p>- press once : shows battery remains - press one more time : vibration starts </p> <p>- press again to change vibration intensity/level - hold 2-3 seconds to turn off</p>