After selecting your product(s), click the "Add to Cart" button at the bottom of the page. Inside Down the Line Putting Mat (The Inside Down the Line™ Putting Mat is the ideal companion to the Inside Down the Line™ Putting Track.) The Inside Down the Line™ Putting Mat measures 11 ½” x 8’ and features a slight incline, which develops firmness of stroke. The Inside Down the Line™ Putting Mat also features a marking to ensure perfect ball placement and rolls up easily for quick storage. The cup is a standard size to simulate a real cup on the green. Quantity: $40.00 ea. All Momentus products come complete with a 30-day, no-risk guarantee!