Big Agnes Benchmark

The 20°F rating is a standard limit for comfort, but keep in mind that personal warmth varies. If you are a cold sleeper, we recommend pairing this bag with an insulated sleeping pad to prevent heat loss through the ground.

Synthetic insulation is heavier and bulkier than down, but it excels in damp conditions. Unlike down, it retains its loft and thermal efficiency even if it gets wet, making it a reliable choice for humid or unpredictable weather.

The mummy silhouette is designed to trap heat efficiently by minimizing dead air space. While it is more tapered than a rectangular bag, it is cut to allow for natural movement, though those who prefer to sprawl might find it snug.

The shell is water-repellent, not waterproof. It will handle condensation and light misting well, but it is not intended to replace a tent or bivy sack during heavy, sustained rain.

The Regular size typically fits users up to 6 feet tall, while the Long size accommodates those up to 6 feet 6 inches. If you are near the upper height limit of the Regular, sizing up to the Long is often worth the extra weight for the added comfort.