This is a Chinese brand called Tommup. The fabric feels thick and sturdy. I haven't seen any fraying or other issues even after wearing them a few times. I think these can be used both during basketball games and off-court. The sole material is made of anti-pilling cotton yarn and non-slip yarn, and the sock tube part uses a high-elastic rubber band and spandex material. For those who like Ballaholic or are interested in Chinese brands, how about these? Free size (26-28cm) My size is 30cm, but I can wear them without any problems.