The Ascent™ down mummy sleeping bag redefines what versatile means in a sleep system. Complex construction and high-quality down keep you warm when it’s cold outside, while the triple-zipper Free-Flow Zip™ system ensures you stay cool and ventilated when the weather warms.
Shaped to allow a natural sleeping position for comfort, the Ascent is light and compact enough to go everywhere your adventures may take you.
Is this down mummy sleeping bag…?
Warm enough for cold-weather use? Yes. The high-lofting down, technical hood, oversized draft tubes, and draft collar make the Ascent 25°F and 15°F true 2.5 – 3 season bags. For colder weather, you might choose the Ascent 0°F model and pair it with a high R-Value sleeping mat like the Comfort Light Insulated.
Really cool in summer temperatures? Yes. The Free-Flow Zip system means separate zippers on your left and right side and in the foot box. Open them for ventilation or to turn the Ascent into a fully-flat comforter.
Able to be zipped to another sleeping bag? The main side zipper can be zipped to the Sea to Summit Women’s Altitude, Journey and Venture sleeping bags – Regular and Long bags have the same side zipper length.
Read up on how the shape, construction and down quality of a sleeping bag will affect how well you sleep HERE
- 2.5 Season: 25°F (comfort range 25°F to 70°F)
- 3 Season: 15°F (comfort range 15°F to 65°F)
- Winter: 0°F (comfort range 0°F to 60°F)
- More room between hips and knees to allow you to sleep in a natural position without compressing the down insulation and creating cold spots. Far more comfortable than narrow mummy bags for most sleepers.
- ULTRA-DRY Down 750+ Loft 90% Down Cluster Premium Duck Down certified Responsible Down Standard (RDS)
- Free-flow zipper system: full-length YKK® #5 main side zip, half-length opposite side zip, and foot zip provides unparalleled ventilation and use as a comforter.
- Vertical baffles over the chest to prevent down shifting as you roll over in your sleep.
- Shaped hood, oversized draft collar, and zipper draft tube keep the cold out and the warmth in.
- Internal pocket for phone / GPS / valuables.
- Form a snug double sleeping bag by zipping to any Altitude™, Journey™ or Venture™ sleeping bag.
- Includes lightweight Ultra-Sil™ compression bag and storage cell.