From Taylormade Japan Website: LINK
Equipped with a wide-spanning speed pocket with a low center of gravity to enable high trajectory, gently, and easy to hit iron.
March will be released â– large face Is equipped with a large face that was able to expand the rebound area. â– transmembrane speed pocket The large transmembrane speed pocket to match the sole size, improved tolerance. â– Wide sole design Reduces the stubbing wide sole and design that allows for low center of gravity, high trajectory.