Abdominal Heating Pad Only $19.99! Abdominal Heating Pad $19.99 – Regularly $40! Quick while supplies last, head to Walmart.com and score an abdominal heating pad belt for just $19.99 (reg. $40). This heating pad can help relieve menstrual cramping, and lower back pain. The pad has 3 adjustable heating mode and has a vibrating function….