Have you tried Live Well Instant Heat Patches? designed to provide warmth and heat therapy on the go. The patches heat up without the need for a microwave and are perfect for minor aches and pains, or just to keep you warm. The patches gradually heat up once exposed to air. Resulting in long lasting relief for up to 8 hours Back Pain Tummy Pain,Neck Pain,Sore Joints,Period Pain, Cycling, Camping, Hiking, Skiing,Surfing or just your kids Saturday winter sport. KEEP WARM with Live Well.