What is a cross back bikini top?

A cross back bikini top is a type of swimsuit top that has a strap or band of fabric that crosses over the back in a "X" shape. The straps may be adjustable or non-adjustable and may be made from a variety of fabrics, such as nylon, spandex, or polyester. Cross back bikini tops can have a variety of styles and fits, ranging from triangle cups to balconette cups, and may have features such as underwire, padding, or hook-and-eye closures for added support and shaping. They can be paired with a variety of bottoms, including briefs, thongs, and boyshorts, to create different styles and levels of coverage. Cross back bikini tops are a popular choice for women who want a trendy, fashionable look or who want to add visual interest to their swimsuit.