Our ice pack for back pain relief is made of dual-fabric varies for different levels of cold or hot. The soft plush side can be used directly, it helps gradually adapt to the cold and avoid frostbite and condensation water dripping from cooling. The nylon side is colder. We suggest using the plush surface for 10 minutes first. If it is not cold or hot enough, use the nylon surface for cold or hot compresses.
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