Sea to Summit Women's Altitude Down 25 Sleeping Bag

About This Item

Temp Rating

15 to 30 Degrees

Insulation Type

Down

Storage:

  • Storage cell and Ultra-Sil™ compression bag included

Design & Details:

  • Body-mapped down chambers to maximize warmth for female physiology
  • Lightweight and durable 20D nylon shell
  • Thermolite® insulation around feet area for quick warmth
  • Pocket on interior for essentials
  • Free-Flow Zip™ system with YKK® zippers for optional ventilation
  • Oversized draft collar, zipper draft tube, and shaped hood to trap heat
  • Wider design around hips and knees to allow for warm, natural sleeping positions
  • Shorter length and narrower girth for efficient warmth and decreased dead space
  • Compatible with Ascent™, Trek™ and Traverse™ to form double sleeping bag
  • Brand : Sea to Summit
  • Country of Origin : Imported
  • Web ID: 21S2SWLTTDTWMNSRGCSL
  • SKU: 22326594
Sleeping Bag SizeRegular Long
ShapeMummyMummy
Minimum Trail Weight2 lbs. 6.1 oz.2 lbs. 9.3 oz.
Temp Rating 25° F25° F
Fill Weight18.3 oz.20.5 oz.
Insulation TypeUltra-Dry DownUltra-Dry Down
Fill Power750750
Shoulder Girth58 in. 60 in.
Hip Girth58 in.60 in.
Footbox Girth46 in.48 in.
Fits Up To5 ft. 7 in.6 ft.
Compressed Volume6.5L 8.3L
Shell FabricLightweight 20D Nylon ShellLightweight 20D Nylon Shell
Zipper LocationRightRight
Stuff Sack Included YesYes

REVIEWS

4.9
100%
Recommended

29 Reviews

Received incentive

Cozy And Warm

This is by far the best sleeping bag I’ve owned. I used it in 40 degree weather and was warm, even though I tend to be cold normally. I love how small it packs down and it’s ultra light. Great investment for sure.

Received incentive

Awesome Bag

I love this bag. We zip it with the Avent bag and love it!

Received incentive

This Bag Is So Cozy

This bag is so cozy and the color is beautiful. The zippers on both sides are such a great thing for me as I typically sleep facing the opposite side the zippers are on other bags and my dog crawls in to sleep inside with me. There’s plenty of room for her to do that with this bag also. We took it on our first adventure backpacking to a fire tower overnight and it was plenty warm in the 20s with my liner, wearing just a base layer. I can’t wait to take it on more adventures when the weather warms up and see how it holds up but I’m already very happy with the purchase!

Received incentive

Pretty Good

The sleeping bag is made well, very comfy feels cozy, and not noisy. The width was great and not too snug sleeping in undergarments but would have been crowded with heavy sleepwear. I wish I would’ve ordered a longer and colder bag. Sleeping Id roll further into the bag and the foot box was cramped lengthwise (im 5’6”). I did not attempt to use the bag solo nor would I because it was so cold, icy, & damp. I used a liner (game changer!) and a secondary sleeping bag unzipped on top as a blanket.

Altitude Women's Down Sleeping Bag 15°f

Wow, I went from a summer flannel sleeping bag that I would freeze in to a cascade of down comfort comparable to nothing you could possibly imagine. I'm is awe as a first time user. It takes a while to wrap your head around the price, but once you jump in, there is no turning back. I highly recommend! I also purchased a liner that can be used alone or with the down bag.

Warm And Cozy

I love this sleeping bag! I recently took it on a canoe trip in Wisconsin over a very cold last weekend in October and It kept me warm all night. I also love the features that allow you to unzip the feet and sides that makes it also very usable on warm nights in the summer.

Received incentive

Obsessed!

This sleeping bag is truly my holy grail! It’s comfortable, versatile, warm, and beautiful! I’m a side sleeper who tosses and turns a lot and this bag didn’t make me feel constricted at all. My feet also tend to get warm so I really liked the zipper just for the end of the bag. Highly recommend!

Couldn't Love More

I'm a HUGE fan of this sleeping bag - as someone who spent years shivering through the night in old/inefficient sleeping bags, the women's specific body mapping of this bag made all the difference! The length/shape of the bag means no "dead space" (where air could stay cold), which is impressive given its not a mummy bag - there is room to sprawl a bit more. While there is extra warmth in the toes, and extra warmth around the chest (with keeps cold air from getting in), simultaneously this bag has all of the zippers you could need to ventilate on warmer summer nights (bottom of bag, both sides to make it more duvet style). The quality of the down/material itself is really nice - super soft and lofty. The bag still bags down incredibly small and lightweight as needed. Genuinely don't have any critiques of this bag and would highly recommend. For reference - I'm 5'4'', and my toes don't touch the bottom of this bag but I can stay plenty warm. 125lbs, and plenty of room to wear several layers if wanted and still be able to move around.

Received incentive

10/10 Sleeping Bag

This is the best purchase I’ve made. I go backpacking often and having a quality sleeping bag makes a huge difference for comfort and light weight carrying. I would recommend this sleeping bag to anyone.

Received incentive

I Got My Sleeping Bag,

I got my sleeping bag, and I’m super excited to try it. I love that it comes with both a compression sack and a storage bag. I wish the inner pocket for the phone was a little larger as my phone doesn’t quite fit.

Received incentive

Money Well *Slept* ;)

This is hands down THE best sleeping bag I've ever owned! Well worth the investment!! I am obsessed with the color! & Its performance is immaculate! The zippers are easy to zip up & down without worry of snagging. & Even when the temps dropped during the night on my last camping trip, this fluffy bag kept me comfy & cozy all night without needing extra layers or a heater in my tent! I love my Sea to Summit sleeping system!!! (I only wish my new Aeros Down Pillows had arrived in time for this last trip!)

Best Sleeping Bag! Buy It!

I've had this sleeping bag for over 3 years (still going strong) and its been everywhere with me! From car camping trips to multi-day treks in all different climates, it will keep you comfy with all the different options. I thought I would want the lighter weight and more compact Flame Sleeping Bay by sea to summit, (and I am sure I would like it) however I am so glad I got the Altitude Bag instead. I love all of the options and configurations (mostly being able to unzip the foot box and stick my feet out when I want. To me It is worth the extra weight ! The bag keeps me warm when I need it and I can change the set up so I can stay cool if I need to as well. If you are considering this you will not regret buying it!

The Best

Love the roominess to roll around, the versatility of the zippers for hot or cold nights, and being able to zip it together with my boyfriend's bag.

Perfect

Love the look, feel, fit and pack ability of this bag. Used two nights at 30 degrees so far and toasty warm.

Great Bag!

This bag is really comfy and cozy! It feels very light but definitely keeps the heat in! My sleeping pad failed on me on night 2 of a 2 night trip and the bag still kept me reasonably warm. I think I would pair it with one of the liners for Alberta's unpredictable shoulder seasons, but I love how versatile it is. I have tried zipping it together with my boyfriend's bag and we were very comfy, almost too warm! If I feel claustrophobic in it I simply unzip the half zip on the off side and it gives my arms a little room to splay out. After about 5 uses I am noticing some of the down coming out so hopefully this is just a normal thing and won't turn into a big issue. I also love the color (not pink!! Woohoo!)

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