ThermaCare® Menstrual provides soothing heat that relaxes muscular contractions to relieve menstrual cramps. Soothing Heat Therapy*Ultra-thin design conforms to your lower abdomen for discreet comfort. Provides soothing heat for 8 hours of menstrual-cramp pain relief. Thin enough to wear discreetly under clothing. Can be worn on the move, during chores or when relaxing.