Ascent AcII Sleeping Bag: 15F Down
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Shop Similar ProductsAscent AcII Sleeping Bag
The Sea to Summit Ascent ACII Sleeping Bag is feathery light and packs down to the size of about two water bottles, so it might be surprising to know how reliably protective when you're camping in wet environments. Its 15-degree rated 750-fill down insulation has a hydrophobic Ultra-Dry treatment to retain its lofty warmth when your tent has some condensation from the storm outside. Boasting true three-season versatility, this bag has a unique zipper system that's full-length on one side and half-side on the other to give you plenty of air on warmer nights. Draft tubes cover both zippers and the shaped hood for solid coverage when it's windy at night. It has an internal pockets and Sea to Summit included an Ultra-Sil compression bag and storage sacke for plenty of pocketing options.
Details
- Light, lofty, packable sleeping bag built for backpacking
- Ultra-Dry Down insulation is hydrophobic for moisture-resistance
- 15-degree rating with free-flow triple zipper for 3-season comfort
- Vertical baffles prevent down from shifting around as you sleep
- Draft tubes around the shaped hood and both zippers for coverage
- Internal pocket stores phones and electronics
- Pairs with Sea to Summit's Altitude, Journey, and Venture Bags
- Includes Ultra-Sil compression bag and storage sack
- Item #STS007D
- Material
- 20D nylon
- Insulation
- 750+ fill RDS Ultra-Dry Down, Thermolite
- Shape
- semi-rectangular
- Zipper
- full-length
- Max User Height
- [regular] 6ft, [long] 6ft 6in
- Shoulder Circumference
- [regular] 61in, [long] 65in
- Hip Circumference
- [regular] 57in, [long] 61in
- Foot Circumference
- [regular] 48in, [long] 51in
- Bag Length
- 83.46in
- Draft Tube
- yes
- Pockets
- [internal] 1 phone/GPS/valuables
- Pad Retainer
- none
- Fill Weight
- [regular] 1lb 3.4oz, [long] 1lb 5.7oz
- Degree
- 15F
- Storage Sack
- yes
- Stuff Sack
- Ultra-Sil compression bag
- Stuff Size
- [regular] 6.2L, [long] 7.8L
- Claimed Weight
- [regular] 2lb 6.8oz, [long] 2lb 10.2oz
- Manufacturer Warranty
- lifetime
Reviews
Q&A
Overall Rating
4.5 based on 62 ratings
Review Summary
Fits Small
Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.What do you think about this product?
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Selecting an option will reload the available reviews on the pageMarch 14, 2024
Super warm and cozy sleeping bag!
[This review was collected as part of a promotion.] Loved that this was shipped to me in a timely manner and I was able to use it in Yosemite in 20 degree weather at night. It was super lightweight, cozy, warm, and a really great product I chose! Love it!!
Originally reviewed on Sea to Summit
February 26, 2024
Very Nice Sleeping Bag
[This review was collected as part of a promotion.] Very nice bag. Down certificate shows 850 instead of 750 which is a bonus. Have not had a chance to use it yet but am looking forward to it. I am sure it will keep me warm. Seems like it will be comfortable for a side sleeper like me.
Originally reviewed on Sea to Summit
January 6, 2024
Awesome bag
[This review was collected as part of a promotion.] This bag is great. We are thrilled with our purchase.
Originally reviewed on Sea to Summit
December 29, 2023
Perfect size
[This review was collected as part of a promotion.] I bought this as a Christmas gift for my son. He is 6'6" tall and struggled to find a high quality bag that he could fit in. This bag was perfect for him. He was thrilled to receive it!
Originally reviewed on Sea to Summit
December 28, 2023
0 degree bag
I used this bag for one night just to test it out. It got down to 30 degrees fahrenheit. I was plenty warm all night long. Even took off my socks in the middle of the night. I am 5”3 and 175 lbs. I felt pretty restricted in this bag. It was plenty long. I wish it had more room in the width in the chest. It got the job done though. I’m impressed.
Originally reviewed on Sea to Summit
December 22, 2023
New sleeping bag
[This review was collected as part of a promotion.] This sleeping did not disappoint, well constructed, love the texture, haven’t use it yet on the trail , planning on using it for our backpacking trip in March,
Originally reviewed on Sea to Summit
December 14, 2023
Very warm, and still light
[This review was collected as part of a promotion.] I was concerned about adding weight to get warmer, but this bag didn’t do that. The flexibility granted by the zipper configuration is impressive. The bag is a keeper. I’m excited to test it in the elements. Note: I went for the 25° bag and plan to add a silk liner when expecting overnight below freezing temperatures.
Originally reviewed on Sea to Summit
December 1, 2023
Stellar Bag
[This review was collected as part of a promotion.] This bag is top-notch. I used it for backcountry high alpine hunting in Idaho late season, with temps dipping down into single digits. It kept me totally warm. Very comfortable. I would not recommend using the pillow lock system, it caused severe damage to my bag. S2S replaced my entire bag though after the damage, excellent customer service.
Originally reviewed on Sea to Summit
November 27, 2023
Cookoo for Cocoa Puffs
[This review was collected as part of a promotion.] Great bag. Temp ratings accurate and bag feels very comfortable and snug but spacious. Only thing that took a little getting used to was the zippers felt awkward to me at first but no big deal
Originally reviewed on Sea to Summit
November 26, 2023
This is the one
[This review was collected as part of a promotion.] I spend way too much time diligently researching my gear purchases. After many hours (okay, days) looking for a 0 degree for backpacking, I landed on this one. I'm 100% happy with it. The liner is plush and super comfy, it packs down small, and the zippers allow to vent when it's too warm. I don't have trouble with the zippers. I am a restless sleeper and I love being able to sleep in all positions in this bag. Yes, it is 5-8 ounces heavier than the ultralight options, but so worth it. I spend 2 weeks at a time I'm the field for work and this bag makes a huge difference. I've used it at 20-40 degree temps so far. At 40 I was all the way unzipped. At 32 I had the short zipper undone. At 20 I was comfy, and I would be confident bringing this bag to 0.
Originally reviewed on Sea to Summit
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