Fat is the Thickest at the same time heavy String among Kitty String. This has 12 strands of thread but still make a good whip and slack. Most slacker like this Type of String. They could feel more the Strings moving around for what they want. Many yoyo players uses this also for counter weight division too.
This is one of the best strings on the planet. Designed to be much longer wearing than normal strings, good for slack and suicide tricks. Feels very soft and smooth during the game. They are 100% polyester.