The so-called “tabi”are traditional Japanese socks characterized by their unusual shape which separates your big toe from the rest of your toes.
This type of socks can be worn with sandals and flip-flops.
This model is called Ribbon (リボン) because of its ribbon design.
Kurochiku - the brand
Kurochiku is a Kyoto-based manufacturer of gift articles.
Their objects reflect ancient aspects of Japanese culture, including traditional patterns and cloths with the typical Kyoto texture and weaving art.