Kalea Premier irons are powered by Cap Back™ Design, which provides stability within the topline and upper perimeter of the face, working in conjunction with the Speed Pocket™ to optimize face flexibility, ball speed and distance. The Cap Back Design also helps minimize unwanted vibrations in the head to deliver a soft and solid feel. Head shaping has been designed uniquely for Kalea Premier to create SGI forgiveness in a sleeker and more elegant overall profile.