Introducing Tourmaline Panties, designed to provide comfort and support for women experiencing period pain. These panties can also help with weight loss just by wearing them. Features: Tourmaline crystals are placed on both sides, the bottom, and the front of the panties. Available in beige and black colors. Sizes range from M to XL. Please make sure to order the right size and color. We accept returns only if the panties are originally sealed and never used. Based on our experience, we recommend ordering one size up from your regular daily size. For instance, if you typically wear size S, we suggest size M. We thank you for your understanding and cooperation.