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.

• Best Use: Backpacking
• Performance: 2.5 Season: 25°F (comfort range 25°F to 70°F)
• Shape: 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.
• Bag Weight: 1 lb 14.3 oz / 860 g
  
• Compressed Volume: 4.9 L
• Fill Weight: 11.6oz / 330g
  
• Fits users Up To: 6 ft / 183 cm
• Temp/En Ratin: 25°F (Lower Limit)