The Odyssey Ai-One putter features an advanced insert designed with Callaway's Artificial Intelligence technology. A Multi-material construction includes unique contours on the back of the face to minimize ball speed losses on off-center hits and increase the sweet spot. Putts finish 21% closer to the hole on average than a typical non-inserted putter. The back of the insert is made of aluminum and the striking surface is coated with White Hot Urethane for a consistent feel and speed control. This design is changing the face of putting and providing golfers with unmatched performance.