Sure Putt will train your eye to see the subtle contours that can make even a short putt difficult. The more you use it, the better your putting game will be A precision state-of-the-art leveling vial is used to read the slope and give a precise reading. The Sure Putt Pro is heavy enough (4oz) to lie flat on the green and small enough (2") to fit your new caddie comfortably in your pocket. The Sure Putt Lite is the same shape and size as our Sure Putt Pro….and will read greens with the same high grade professional leveling vial used in all Pro pieces. It is constructed of ABS plastic and will not warp or change shape even with the hottest summer weather or coldest winters. It comes in a clear clam shell hanging package with complete instructions with every Sure Putt Lite. Read the greens like a pro with our newest addition of green readers! The Sure Putt Lite is a welcomed addition to golfers at all handicap levels.