The Thera-Med Back Cold Pack provides concentrated cold gel therapy to the lower back area for relief of pain and soreness. If you need a more intense cold therapy treatment the white pad provides maximum-strength pain relief. Pad remains flexible when frozen and can go straight from the freezer to your body without additional sleeves or towels due to its dual temp technology. Innovative design helps to keep the gel evenly dispersed throughout the pad for the most effective cold therapy.