Sea To Summit | Ascent Down 15°F


Sale price$449.95

Shipping calculated at checkout

Temp Rating: 15°F
Size: Regular
Only 2 units left


Sea To Summit | Ascent Down Sleeping Bag 15°F

The Ascent down sleeping bag is a relaxed mummy style that 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.


  • 3 Season: 15°F (comfort range 15°F to 65°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.



                                         15°F REGULAR                  15°F LONG

BAG WEIGHT                   2lbs 6.8oz /1100g              2lbs 10.2oz / 1195g

COMPRESSED VOL          6.2L                                    7.8L


COMPRESSION SACK      S - 10L to 3.3L                   M - 14L to 4.5L

FILL WEIGHT                   19.4oz / 550g                     21.7oz / 615g

FITS UP TO                       6 ft / 183 cm                      6 ft 6 in / 198 cm

SEASON RATING             3 Season                            3 Season

TEMPERATURE                15°F (Lower Limit)             15°F (Lower Limit)
WOMEN'S TEMP             27°F (Comfort Limit)          27°F (Comfort Limit)

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