"The NeuraPutt is the epitome of target practice. Three sets of foam bumpers allow a user to adjust the size of the cup. Start off by hitting 10 putts from five feet with the thinnest (orange) bumpers, which provide the widest opening. As you improve, make the target more challenging with medium-size bumpers (green) and, eventually, the thickest ones (blue), which create the smallest opening. That makes this putting aid great for all skill levels."