3' x 9' putting green features. -Indoor/outdoor, rolls up easily for quick storage in reusable box. -Practice chipping like a pro when you chip onto the green from far or near. -Slight incline develops firmness of stroke. -Putting cups are 1/4" smaller than regulation size to sharpen aim. -Additional 4" putting hole plugs can be placed under the green to create various putting angles. -Polypropylene grass surface with non-skid foam backing simulates Bermuda grass to give you an authentic feel of speed, line and slope. -Lakes and sandtraps catch missed shots. -Length allows up to 9' of putting.