The Trigger Point GRID VIBE Vibrating Foam Roller for Pain Relief, Relaxation and Recovery is a cordless, rechargeable vibrating high-density EVA foam roller that provides clinical therapy technology in a compact, portable, personal unit. Specifically calibrated to vibrate at one wavelength that is optimum for relief, the 33 Hertz vibration minimizes discomfort, offering a soothing blend of pressure and vibration to release tight tissue. Long-term benefits of foam rolling therapy include pain reduction and faster muscle recovery. The durable high-density signature GRID surface pattern patented by Trigger Point features a variety of widths and textures to replicate the sensation of a massage therapist’s hands. Compact at 12 inches long, with a 3.5-inch diameter, and weight of 2.15 pounds, the GRID VIBE delivers quiet, targeted, deep tissue relief. Designed to fit inside the original Trigger Point GRID Foam Roller to reduce intensity and increase surface area for a milder foam rolling experience. The Trigger Point GRID VIBE Vibrating Foam Roller includes an AC charger; the unit’s built-in lithium ion battery can be fully charged in three hours, and holds two hours of foam rolling power when fully charged. Owner’s manual features instructions for use, exercise examples and an access code for exclusive online video instruction. One-year limited manufacturer’s warranty.