The Callaway B-Square Putting mat is a quality mat marked with alignment aids to help you practice standing square to th eline of your putts.Squaring your putter face at impact through your intended line is the most critical component of a good putting stroke. The Odyssey Mini B-Square Putting Mat comes with painted markings to assist with alignment, set up, swing plane and tempo.The Mini B-Square mat's ultra-thin 8" width is designed to further reinforce a square face at impact, otherwise the ball wanders off the mat.Works for both arc and straight back/thru putting strokes, the Mini B-Square Putting Mat is made with premium materials and features a putting surface that simulates a real putting green, delivering a smooth roll right out of the box.The patented putt cup is 1/2" smaller than regulation to help sharpen your aim, and is portable for placement on the mat, or a real putting green, at varying distances.A great practice aid or gift for any level of golfer.The Callaway Mini B-Square Putting Mat Features:Learn to square your putter face at impactPromote ideal swing plane & tempo Helps both arc and  straight back / through putting strokesPremium quality simulates real green surfacePremium quality for smooth roll - no folds or creasesPutt cup 1/2" smaller than regulation to sharpen aimDimensions 8' x 1.5' (2.4 x 0.45m)