Original Bed Buddy Back WrapNatural fill back wrap for hot or cold therapy, safe for the environment. The Bed Buddy Back Wrap relieves back pain and soreness by providing natural moist heat or cold therapy. Just microwave the wrap for moist heat applications or place it in the freezer overnight for cold therapy. For deep penetrating moist heat, place the wrap in the microwave and apply for 15 20 minutes. For cold therapy, place it in the freezer for 8 hours.