The feature of the erotic underwear is that an opening is provided in the middle of the underwear, the opening continues from the front of the underwear to the back of the underwear, and a closed zipper is installed. Sexy panties, like sexy skirts, highlight "sentiment" and focus on sexiness. They are different from conventional home panties. The design of panties may be supplemented with various characteristic patterns, or hollow out, or matched with various Metal jewelry.