Big Hug Pop Undies are Popmask's period underwear specifically designed to work seamlessly with their heating patches. These underwear likely feature strategic placement areas or adhesive-friendly materials that keep heating patches secure throughout the day.

They're designed to be comfortable during your period while providing the perfect foundation for Big Hug patches. It's a smart solution if you're already using Big Hug patches regularly and want underwear optimized for keeping them in place.