One of the features of the Anacapa Putter is the alignment guides. Located in the center of the cavity, the side walls of the raised alignment bar are painted red. If you only see one red side wall, then your eyes are either too far inside or over the line of sight which will make it more difficult to hole your putt. However, if you see both red sides with the putter resting on the ground at the center of the sole, you know your eyes are directly over the line of sight.