Natural Menstrual Cramp Relief with Self-Heating Patches – Like a Warm, Cozy Hug Just for You! Let s be real—periods are tough enough without those pesky cramps cramping your style. But don t worry, girl! Our self-heating menstrual patches are here to wrap you in a big, warm hug of soothing comfort. Whether you re curled up on the couch or out and about slaying your day, these patches deliver up to 12 hours of snuggly, targeted relief right where you need it most.