It is an indispensable item in winter and freezing time. Warm up your hands and body that were cold in maintenance work. Generate heat by getting rid of from the bag. Maximum temperature: about 63 C Average temperature: about 53 C Duration: about 12 hours How to use: Take the inner bag out of the outside bag just before use and peel off the peel-off sheet so that it does not touch skin directly.
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