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Sea to Summit Ascent 15-Degree Down Sleeping Bag

  • Based on 17 reviews
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Style: Regular


Features

  • 15-degree Fahrenheit (-10-degree Celsius) down sleeping bag for 3-season backpacking; mummy style features shaped hood, draft collar, and zipper draft tube
  • 750 fill power down insulation (Responsible Down Standard certified) treated with ULTRA-DRY Down to improve reaction to moisture, retaining loft and performance
  • Lightweight 20D nylon shell; YKK zippers with full-length right-side zip, half-length left-side zip, and foot zip for ventilation and versatility; internal pocket for small essentials
  • Relaxed mummy shape offers more room between hips and knees for a natural sleeping position; vertical baffles over the chest prevent down fill from shifting
  • Regular size bag has a max user height of six feet; bag weighs 2.4 pounds; compresses to 6.2 liters with included Ultra-Sil compression sack

Description

The Sea to Summit Ascent 15-Degree Down Sleeping Bag is a high-performance, versatile down bag, ideal for backpacking in a variety of temperatures and conditions. The mummy style features a shaped hood, oversized draft collar, and zipper draft tube to keep the cold out and the warmth in. High-loft, 750 fill power down insulation (Responsible Down Standard certified) is treated with proprietary ULTRA-DRY Down to improve reaction to moisture, retaining loft and performance in rugged conditions. The relaxed mummy shape offers more room between the hips and knees for a natural sleeping position, while vertical baffles over the chest prevent the down fill from shifting during sleep. Snug and cozy in the cold, the Free-Flow Zip System cools things down when temperatures rise: a full-length left-side zip, half-length right-side zip, and foot zip can be opened for ventilation or to turn the Ascent into a comforter. Bag can also be zipped to the Sea to Summit Women’s Altitude, Journey, or Venture sleeping bags. The shell is made from lightweight 20D nylon, and an internal pocket holds small essentials. The Sea to Summit Ascent 15-Degree Down Sleeping Bag is available in two sizes: Regular (max user height of six feet) and Long (max user height of six feet six inches). Includes Ultra-Sil compression sack. Sea to Summit products are guaranteed against defects in materials or workmanship for the lifetime of the product.


Item Package Dimensions L x W x H: ‎18 x 13 x 8 inches


Package Weight: ‎1.36 Kilograms


Item Weight: ‎1 Kilograms


Brand Name: ‎Sea to Summit


Warranty Description: ‎Manufacturer guarantee against defects in materials or workmanship for the lifetime of the product


Manufacturer: ‎Sea to Summit


Part Number: ‎S1121


Model Year: ‎2021


Style: ‎Regular


Outer Material: ‎Nylon


Fill Material Type: ‎Down


Size: ‎regular


Date First Available: April 5, 2019


Frequently asked questions

This product is currently out of stock. Please check back later for shipping info.

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • High quality bag
Style: Long
Have yet to use the bag but it’s clear this is a lightweight high quality bag that is well thought out. The zippers did not bind and I love how you can vent the chest area with zippers on both sides. The foot bed has space for my size 12 feet and also a vent zipper for the feet. Overall very happy with this purchase ... show more
Reviewed in the United States 🇺🇸 on August 16, 2020 by PH in Utah

  • Gets damp and smelly from condensation and humidity
Style: Regular
This sleeping bag is a really comfortable one. It is able to really puff up and you dont overheat when it gets warm. The reason i said 3 stars is because it gets really smelly and damp from condensation. Now i know its says ultra dry and everything but really, it couldnt handle one random night with tent fully closed in Florida. So this is the reason i am returning it. I would really like to love it ,with the light weight, comfortability and everything but if it cant handle humidity then whats the point, one has to be practical. ... show more
Reviewed in the United States 🇺🇸 on December 27, 2020 by Robert Scott

  • Light and warm!
Style: Regular
Super light to backpack with. And super warm when you needed to be. Reducing my pack size was my goal and this did just that.
Reviewed in the United States 🇺🇸 on January 22, 2020 by Amazon Customer

  • Amazing sleeping system
Style: Long
Best sleeping bag ever, if your on the mountain side or the back of a cargo plane, this bag will keep you comfy. I recommend it.
Reviewed in the United States 🇺🇸 on December 16, 2019 by Robert C. Thaler

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