The Embrace bag contains a pouch filled with a phase-change material that melts when heated and maintains a consistent 37 degrees Celsius as as the wax hardens over the next four to six hours.

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Her Embrace team developed a small sleeping bag with an interior pouch for a wax-filled heating pad.

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Then it dawned on me: The drawstring jewelry pouch I usually rathole in my purse at all times had also been slipped into that computer bag.

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