What is kappa authentic?

As an AI language model, I do not have any specific information on "kappa authentic." However, "kappa" is a Japanese word that refers to a mythical creature that resembles a water imp or a turtle. In modern times, the kappa has also become a popular character in Japanese pop culture, often depicted as happy and mischievous.

In terms of clothing, "kappa" also refers to an Italian sportswear brand that produces athletic wear, sneakers, and accessories. They are known for their iconic logo, which features two people sitting back-to-back, one wearing a black tracksuit and the other wearing a white tracksuit. Kappa Authentic is a sub-line of the brand that focuses on retro designs from the '80s and '90s. Their products often feature bold logos and bright colors, inspired by the streetwear and hip-hop fashion of those eras.