Comfort Gel Packs are the best way to cool down or warmly comfort pain in your body. Use the9″x12″ size to wrap around your joint, 5″x18″ which is great for your lower back, and 10″x15″ for really full coverage. Other sizes also available. And the best part about the product? Even when it’s freezing cold, the pack remains soft and malleable. Medicinal ice. So Suzy Says.