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Hand warmers with unlimited use
Material PVC (Transparent or Frost) Size: Small: 83 mm After bending metal plate, liquid become crystallites and heat within around 1 minute Celsius degree of hand warmer with function : 50~60 Celsius degree (maintain 40~60 minutes). You could use towel or cloth to cover hand warmer to extend using time. Could be re-used (unlimited use), only put into boiling water (80~90 Celsius degree) about 5 minutes or until crystal turn into liquid.
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