The BALEAF Women's Athletic Tennis Dress is another popular choice for women looking for a knee-length activewear dress on Amazon. It is made from a blend of polyester and spandex, which provides a comfortable and stretchy fit. The dress features a built-in shorts lining for added coverage and a racerback design for ease of movement. It also has a hidden pocket on the back to store small items. Whether you're playing tennis, going for a run, or just running errands, this dress offers both style and functionality.