The cymbal-smiths at Zildjian put over ten years worth of research and development into the K Fat Hats, and we are sure glad they did. These hats come from a melting pot of drummers tonal desires, lathed and hammered into something truly unique. Their size is actually exactly 14-1/8", just a hair larger than what you might normally find in your cymbal bag. They bridge a gap between "A" and "K" cymbal style manufacturing, and the weight difference between top and bottom is smaller than many other hi hat pairs. Zildjian continues to innovate from within, pulling from their own designs to create something new, and these K Fat Hats are a prime example.