when will the bag makers catch up and offer insulated snack bags?
Most are, fairly sure your WW stem bag is padded with foam for insulation.
i'm going to investigate mine at lunch
Mine is. Has done a great job of keeping a bottle of rose at drinking temperature in the past.
Or cut up a bit of cheap sleeping mat to create your own foam insert.
@Maj started
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Most are, fairly sure your WW stem bag is padded with foam for insulation.