1. The brand known as "背靠背" in Chinese is called "Kappa" in English. 2. Kappa is a well-known Italian brand, often ranked alongside Nike and Adidas in terms of prestige. 3. If the brand you're referring to is not Kappa, it could be a counterfeit or knockoff attempting to imitate the real Kappa brand, which is known for its distinctive logo of two people standing back to back with their legs kicked up.