ULTRATHIN 3MM THICKNESS: Our THIODOON Golf Putting Alignment Mirror are Made of High-Quality Advanced Acrylic Material, Which is Not Easy to Bend and Deform, Sturdy and Wear-Resistant. Only 3mm Thick, When Practicing, You Can't Feel Its Thickness at All, Achieving the Practice Effect of Actual Combat..SUPER SCRATCH-PROOF: The Super-Hard Tempered Layer of This Golf Putting Mirror Can Effectively Resist Scratches Caused by Sharp Objects in Life, Which Greatly Improves the Life of This Putting Mirror. The Mirror Surface Has been Treated With Oleophobic and Waterproof Treatment, Which is Not Easy to Mucus, and There is No Residue After Wiping..PUTTER ALIGNMENT LINES: Combined with The Putting Alignment Mirror Design, It Can Not Only Better Self-Correct The Putter Posture, But Also Practice The Golf Putter Habit According to Its Putting Line, and at The Same Time Promote the Correct Swing Rhythm, So as to Form The Correct Putter Memory and Help You to be More Master Putting Skills Quickly..PORTABLE & PRACTICE ANYWHERE:The Putting Practice Mirror Measures 12 inch x 6 inch and Comes with A Black Carry Bag, It Can Easily Fit into Any Golf Bag and Carry It with You, This Putting Mirror is Perfect for Use on Putting Mats at Home or on The Greens on the Golf Course to Improve Your Putting Practice Skills..GREAT GIFT FOR GOLF LOVERS: Great for Golf Beginners to Develop Good Putting Habits. An Ideal Gift for Your Family, Kids and Friends at Thanksgiving, Christmas, New Year's and Birthday Parties. If for any Reason You are Not Satisfied with Our Golf Putting Alignment Mirror, Simply Return within 30 Days of Purchase for A Full Refund.