Numerous advancements, including a dual durometer face, set the G5i putter series apart from the rest. The new G5i insert design features a soft perimeter injected with a higher durometer impact surface for optimal feel and sound. The insert cavity is precision machined to ensure consistency. Inertia increases average 10% across the new line and are attributed to re-distribution of weight resulting from the addition of thru holes and sole cavities. Alignment is improved in the G5i series putters with a ball-width, crescent-shaped top rail—a feature first introduced on the popular PING Craz-E Series. The new series also applies a new Optigraphic Alignment System in the back of each model to further assist in alignment. A new, dual textured blue Winn grip is standard on each model.