The Jailbird Nano is the smallest Jailbird in Odyssey's line. A request from Tour this head is 5% smaller than the Jailbird Mini, but with the same overall shape and Versa alignment. This DB version comes with a Double Bend shaft making this putter face balanced and best suited for strokes with minimal arc and face rotation and features the Ai-ONE insert with an aluminum backer and White Hot urethane striking surface and Odyssey's SL 90 Stroke Lab steel shaft. FEATURES All golfers, even the best Tour players in the world, miss the center of face from time to time. And when you lose speed relative to a center hit, the ball doesn't roll as far as you intended, so you miss more putts or leave them farther from the hole. Now in Odyssey Ai-ONE, Odyssey's leveraged Callaway's industry-leading Artificial Intelligence design and super-computing capabilities to create the most advanced insert in golf. The multi-material construction includes unique contours on the back of the face that minimize ball speed losses on off-center hits, and greatly increase the sweet spot. Odyssey's revolutionary Ai-ONE urethane insert delivers more consistent ball speeds, even from off-center hits. Ai-ONE Insert designed using Artificial Intelligence, Odyssey's created contours on the aluminum backer of the insert to promote consistent ball speed across the face. A grooved White Hot urethane layer is grooved into that aluminum backer for the classic White Hot feel that Tour players and amateurs love. Ai Window Odyssey designers and engineers developed a Panlite(R) window, which is a unique automotive grade polymer, that allows them to showcase the unique topology of the back of the insert. SL 90 Shaft A lightweight steel shaft with 20-30 grams (depending on the grip) of counterbalance weight in the butt end. This is an evolution of the Stroke Lab Weighting that will appeal to even more golfers. Unique Navy Blue PVD Finish These putters all feature a beautiful navy blue PVD finish that really sets them apart and gives them a premium look.