The new Flatso Putter Grips feature the distinct pentagonal “Flatso” profile: a wide, flat front grip shape with five pronounced edges. Flatso was the trusted grip used by Jordan Spieth during each of his 3 major championship wins. Now with Traxion Control and Spyne Technology, the Flatso Series has been refined to offer even better feel and feedback; Traxion Control - An advanced surface texture that improves feedback and tack. It places “X-shaped” treads in high sensory areas on the sides and bottom of the grip to enhance feel and comfort. Spyne Technology - A heavily embossed ridge along the underside of the grip that guides golfers to repeatable hand placement, making it easier to square the face at impact and start more putts online. No CounterCore weight is included with the grip.