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Sea To Summit
Ascent Sleeping Bag: 15F Down - Women's

5 out of 5 stars
18 Reviews
Color:Celery Green



Why We Like The Sea To Summit Ascent Sleeping Bag

The Sea To Summit Ascent Sleeping Bag is the ultimate sleeping bag for versatile adventures, offering a spacious mummy shape for comfortable nights and lightweight design that keeps our pack light while backpacking through the high country. The hydrophobic down provides lofty warmth in damp conditions, allowing us to get out there in early spring when there's still snow melting away in the mountains. The Free Flow Zip System allows for fully customizable warmth, with the full-length main zipper, half-length side zipper, and zippered footbox allowing us to configure the bag for precise comfort.


  • Comfortable lightweight sleeping bag for near year-round adventures
  • Relaxed mummy shape gives us room to move in our sleep
  • 750-fill hydrophobic down repels light moisture to maintain warmth
  • Durable nylon material stands up to years of camping and hiking
  • Quilt Lock design evenly distributes heat for reliable comfort
  • Large fitted hood is easily adjustable and accommodates a pillow
  • Free Flow Zip System allows us to customize our ventilation
  • Down-filled draft collar and tube seal in heat in cold conditions
  • Item #STSZ08I
Responsible Collection
Responsibly Sourced, Recycled/Repurposed
recycled 20D nylon
750-fill RDS certified duck down, Ultra Dry Down treatment
relaxed mummy
full-length, two-way
Max User Height
[regular] 6ft 0.9in, [long] 6ft 6in
Shoulder Circumference
[regular] 62.2in, [long] 66.1in
Hip Circumference
[regular] 57.5in, [long] 61.4in
Foot Circumference
[regular] 46.9in, [long] 50.8in
Bag Length
regular, long
Draft Tube
full-length, down-filled
1/2-length two-way zipper, two-way footbox zipper
Fill Weight
[regular] 1lb 3oz, [long] 1lb 5.8oz
European Norm/ISO Comfort Rating
European Norm/ISO Lower Limit Rating
Storage Sack
Stuff Sack
Stuff Size
Claimed Weight
[regular] 2lb 4oz, [long] 2lb 8.8oz
backpacking, weekend camping
Manufacturer Warranty
limited lifetime

Overall Rating

5 based on 19 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 0 reviews
5 Stars - 19 reviews

What do you think about this product?


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5 out of 5 stars

June 14, 2024


[This review was collected as part of a promotion.] Hands down the absolute best sleeping bag on the market. The women’s one is slightly warmer and more filled than the men’s one. Where my girlfriend sleeps colder than me, it’s absolutely perfect. The women’s and men’s ascent zip together for couples, it packs down to the perfect size to fit into my osprey atmos ag 50 sleeping bag compartment. I’ve used it down to 25 degrees and it is very comfortable. Keeps you very warm Packs down zippers work better than any bag I’ve ever used Sides and bottom unzip so you can use your arms and legs outside of the bag

Auscar S.
Sea to Summit

Originally reviewed on Sea to Summit

5 out of 5 stars

May 27, 2024


[This review was collected as part of a promotion.] This is a super comfortable bag! Normally, I’m incredibly uncomfortable with a sleeping pad and bag, but the Ascent bag was so cozy! Kept me warm through the night, and the zip downs on the side were great for preventing overheating. It’s a bag that feels nice to slip into after a long day of hiking, and at around one pound, didn’t add to much to my pack. I’m excited to keep using this for the season.

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Originally reviewed on

5 out of 5 stars

May 26, 2024

Comfy and warm

[This review was collected as part of a promotion.] I Love the shape of this sleeping bag and that it’s made for a female body and stature. Can’t wait to take it fall camping , and am excited to break it out this summer. It’s compact and easy to bring along on the road.

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Originally reviewed on

5 out of 5 stars

May 24, 2024

Green with Backpacking Envy

[This review was collected as part of a promotion.] I am so excited to have received this sleeping bag! I plan on using it for our upcoming Yosemite trip. The color has two variations of green, which looks great and very eye catching. The durability of this sleeping bag is amazing and I know it will last multiple backpacking trips. The bag it comes in has two handles, making it easy to attach to my backpack using a carabiner at the top. It's super light, and I can roll it even tighter if needed, which is a huge plus for longer hikes. I was able to test it out in my living room and it has just enough space to not feel claustrophobic but keep me warm. The amount of down filling is impressive and I’m looking forward to a comfortable night's sleep after a long day of backpacking Yosemite!

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Originally reviewed on

5 out of 5 stars

May 20, 2024

Really incredible sleeping bag

[This review was collected as part of a promotion.] I am in love with this Sea to Summit sleeping bag. It’s the Ascent Women’s Down bag. The color is pretty and I like the aesthetic. It’s super portable. The bag is easy to carry. It can pack down small and is super light. I like all the zipper features. It’s cool that you can zip up but still leave your legs and arms sticking out. It’s very warm inside. The hood is nice as well. The size is perfect for me. Overall this bag is great and I would recommend.

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Originally reviewed on

5 out of 5 stars

May 19, 2024

Compact, warm and well made- extremely durable construction

[This review was collected as part of a promotion.] I received a free Ascent Women’s down sleeping bag by seatosummit in exchange for my honest review. This sleeping bag is extremely well made. The material is so soft and the weight is light as well for backpacking. This is rated to keep you warm in as low as 15 degrees Fahrenheit. The weather near me was not that cold but it is very warm and comfortable. The design is well thought out and I especially like how the head area curves in and can be tightened to keep out the cold. This sleeping bag is the regular size and is large enough for a woman that is 5’7’’. With that being said, I am 5’10 and I weigh 175lbs. Although I am past the recommended height restriction, I was still able to fit in this sleeping bag. My toes were right up against the bottom but it wasn’t uncomfortable. I assume that the long would be even more comfortable for my body type. The color is nice and reminds me of an avocado- dark green on the outside and light green on the inside. There is also a well thought out pocket on the inside for small items such as a phone or keys. For such a warm sleeping bag, I am super impressed with how small it can be folded into. This would be a fantastic addition for any serious hikers/campers who are looking to stay warm after a long day of hiking.

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Originally reviewed on

5 out of 5 stars

May 15, 2024

Soft and fluffy

[This review was collected as part of a promotion.] This sleeping bag is so soft and comfortable! It feels like your bundled up in clouds. It’s feels well insulated and it’s easy to pack and unpack from its bag. It’s a pretty 2 tone green color and I’m sure it will keep me warm camping on chilly nights!

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Originally reviewed on

5 out of 5 stars

May 13, 2024

Lightweight but warm

[This review was collected as part of a promotion.] I’m very excited to bring this to our japan trip. Very lightweight but is really warm when I tried it. Feels comfortable and durable. The price definitely matches the quality

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Originally reviewed on

5 out of 5 stars

May 11, 2024

Lightweight and cozy

[This review was collected as part of a promotion.] Wow so glad I got this thing slept great in 50 degree night, so incredibly lightweight and fits in your pack easily! Great for camping or for survival gear.

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Originally reviewed on

5 out of 5 stars

May 10, 2024

High quality

[This review was collected as part of a promotion.] This down sleeping bag is made of high quality material. It was packaged in a little bag for easy carrying. It is very comfortable, and sure to keep you warm while camping. The quality is top notch.


Originally reviewed on