Kitty String is one of the most durable strings in the world by only using high class materials. Fat is the Thicker version of Normal 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 Yo-Yo players uses this also for wide gad Yo-Yo which giving it a more responsive feel, for tight binds (which means your next throw is going to have some intense spin on it). Tall is an extra long string. Length: 130cm - 140cm Tips when using Kitty String: There is no finger loop on the end of the string. Please make sure to cut your Kitty string to your own preferred measurement and make a finger loop before play. Stretch your Kitty String before using it. This reduces the twist and elasticity of the string while playing.