| 摘要 |
A device for retaining face warmth, formed of an integral, one-piece, generally planar blank of rigid material having a metallized surface on at least one planar side. The blank is cut and scored to provide walls which fold toward the metallized surface to form a self-supporting enclosure for a human head. A rear wall is provided which includes a horizontally central extent approximating the perimeter dimension of a human head and which is tapered from its bottom edge to at least a region above said central extent.
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