My wife sewed at least two Frostine kits for our family camping gear. She did a sleeping bag -- synthetic insulation, and she did a 3-man tent. We still have both although we use neither anymore.

The bag has suffered the fate of all synthetics and lost its loft. The tent has been well used by us and friends but still works. However, it was not by any means lightweight. We used it in our car camping days.
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Human Resources Memo: Floggings will continue until morale improves.