What is a square neck bikini?

A square neck bikini is a type of women's swimsuit that has a square neckline on the top. The square neckline is a straight, horizontal line that sits across the collarbone and upper chest, exposing more of the neck and upper chest than a traditional bikini top. The top of a square neck bikini may have cups to support and shape the breasts, or it may be a bandeau style with no cups. The bottom of the suit may be a thong, bikini cut, or full coverage style, and it provides coverage for the hips, buttocks, and groin. Square neck bikinis are often made of stretchy, quick-drying materials such as nylon or spandex and come in a wide range of colors, patterns, and sizes. They are a popular choice for beach and pool wear because they are stylish and comfortable.