Develops perfect alignment, backstroke length and acceleration through the ball from 3 ft, 5 ft and 7 ft Portable indoor practice putting green featuring a continuous gravity ball return designed to adjust to the specific putt distance The Hole is constructed on the upslope to provide a gravity ball return and a realistic golf course putt True-roll surface simulates real green conditions Develops perfect alignment, backstroke length and acceleration through the ball from 3 feet, 5 feet and 7 feet Portable indoor practice putting green featuring a continuous gravity ball return designed to adjust to the specific putt distance The hole is constructed on the upslope to provide a gravity ball return and a realistic golf course putt True-Roll surface simulates real green conditions