Sub Standard
XL- 100% Polyester
Sub Standard is an entry-level string for beginners and intermediate players who want to start with a low-cost bundle. The sub-standard strings are made from 100% polyester.
Compared to First Class, the raw materials used are a little more inexpensive. However, Kitty guarantees that even with the low-cost price, they still focused on the final quality of the product so that it doesn't feel cheap or is easy to wear out.
XL
XL is the Thickest among all Kitty String. XL gives a tighter bind and faster whip. This was designed for people who still feel that Fat type are bit thin for their play. XL upgraded the thickness to 13 Strands to make it even thicker and heavier for all types of division. Usually, XL are used by Single A division (1A)
Strings are between 120 and 125 cm in length, so they are a good choice for those who like longer strings. In anticipation of being cut to a specific length, these strings do not come knotted, so you must tie your own finger hole.