Big Agnes Benchmark 20°

The Benchmark 20° is a synthetic mummy sleeping bag rated to 20°F, weighing 1304 g. Synthetic fill stays more forgiving than down if it picks up moisture from condensation or a damp tent floor, at the usual cost of more weight and bulk for the same warmth rating. Its cut is roomier than a snug mummy shape, built for side sleepers and anyone who moves around during the night rather than lying flat and still. The water-repellent shell adds a margin against condensation and light dampness rather than sustained wet weather. At 1304 g it suits three-season backpacking trips into cooler nights rather than summer-only outings where a lighter bag would do.