GrooveTube™ – Like a club and putting aid all in one. This putter has a radical new design that combines form and function. The putter incorporates 3D visual alignment technology to guarantee perfect address and setup over every putt. By looking through the alignment window and using the centering line at the bottom of the tube, the golfer will see one seamless three-dimensional alignment line that indicates the sightline is correctly positioned over the putter. The GrooveTube’s deep weight distribution and near equator COG work together to reduce twisting on off center hits and create more immediate roll off the YES! C-Grooves.