Rab Ascent Sleeping Bag

The Ascent is built for cold-weather excursions with a temperature rating of 15°F. Its 650-fill power duck down and wind-resistant Pertex Quantum shell make it a reliable choice for late-autumn or winter camping where thermal efficiency is critical.

The wide mummy silhouette is cut with extra room in the shoulders and hips. This design is ideal if you are a side sleeper, tend to toss and turn, or need extra space to layer clothing inside the bag without compressing the down insulation.

The bag uses trapezoidal box-wall baffle construction, which ensures the down stays evenly distributed and fully lofted across the entire bag. This structure prevents the insulation from shifting or thinning, which is a common cause of cold spots in standard stitched-through designs.

Yes, the Rab Ascent uses 650FP European duck down that is RDS (Responsible Down Standard) certified. This ensures the down comes from animals that have been treated humanely.

Yes, the angled foot box allows your feet to rest in a more natural, upright position rather than forcing them to point straight up. This reduces pressure on your feet and prevents the insulation from being compressed by your toes, keeping your feet warmer throughout the night.

The three-dimensional neck collar acts as a gasket around your shoulders, sealing the warm air inside the bag and preventing it from escaping when you move. It is a crucial feature for maintaining core temperature when the outside air is near the bag's 15°F limit.