The TriggerPoint MB Vibe massage ball is a must-have for athletes who want to perform at their optimal level day in and day out. Combined with the spherical design for multi-directional rolling, the roller's vibrations penetrate deep into muscles to target tense muscles with precision. With 3 different vibration speeds, the MB Vibe helps increases circulation compared to non-vibrating massage balls. Ideal for use before a workout, the vibrating massage ball loosens and lengthens muscles to increase flexibility. Roll with the MB Vibe to reduce soreness and stiffness faster than you would with a non-vibrating roller. The roller includes a rechargeable battery, which lasts for up to 2 hours of use per charge.