This is a review of the Sea To Summit Spark Women's Down Sleeping Bag.

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Sea To Summit Spark Women's Down Sleeping Bag Written Review Review by The Good Ride

Sea To Summit Spark Women’s Down Sleeping Bag

Sea To Summit Spark Women's Sleeping Bag

Ethics Statement: We don’t get paid by the manufacturer to write these reviews.  We do make money from the “Where To Buy” links, but this is our best attempt at an honest and objective review from an average camper’s perspective.

How This Review Happened: Sea To Summit sent us this bag to test out and review.

Testers: Steph

Size: Regular (up to 5’7″)

Sizes Available: Regular (up to 5’7″ and Long (up to 6′)

Steph’s Specs:
Height: 5’3”
Weight: 108 lbs
Waist: 27”
Hips: 35”
Inseam 29”
Torso Length (collarbone to pant line) 18”
Shoulder Width 16” wide

Temp Rating Available: 15F, 30F, and 45F

Temp Rating Tried: 30F (Regular Length)

Insulation: RDS-certified, 850+ fillpower goose down with a non-PFC Ultra-Dry Down treatment

Material: Ultralight, breathable 10D nylon liner and a 10D shell with PFC-free DWR

Sea To Summit Spark Women's Sleeping Bag

Weight (In Regular Length)

15F – 2lbs 8oz

30F – 1lbs 4.6oz

45F – 13.5oz

Weight (In Long Length)

15F – 2lbs 4.2oz

30F – 1lbs 6.5oz

45F – 15.02oz

Sleeping in the bag with a hammock

Testing Conditions

I slept in this sleeping bag in temps ranging from 30F – 38F at night. I slept outside in my hammock with the bag and a thin pad.



I found the Spark Women’s Sleeping bag highly comfortable. I love the softness of the 10D nylon liner. It moves well, is breathable, and also is quiet. The extra deep hood on the bag adds a lot of needed warmth around the head at night without being overly restricting. I also found the cut and shape of the bag to fit just right for height.

I felt that the temp rating on the bag was very accurate to the 30F rating. The temps I tested it in were right in that zone both nights, and I was quite comfortable without being too hot or too cold.

Sizing / Fit

This Spark Women’s Sleeping Bag comes with a specific shape and cut for women. It is slightly narrower in the shoulders, and slightly wider through the hips. And strategically placed insulation and body mapping to help increase warmth and comfort when using the bag.

It has a non constricting mummy shape to it. I found it comfortable to sleep on my side as well as my back and was able to move around freely throughout the night without restriction.

Extra deep hood on the Spark Women's Sleeping Bag

Deep Hood

I really love the extra cushy deep hood on the bag. It creates a nice warmth pocket around the head and also has a cinch that can close it down as tight as you want depending on temps. It stayed put throughout the whole night as well.

Quilt Attachment

The Spark bag comes with snaps that easily attach a Sea To Summit quilt. This way if you know you will see colder temps for a camping trip, you can add warmth without needing an entirely different bag. I really like this feature, as it can save money as well as keep the quilt in place throughout the night making sure it is effective at keeping you warm all night instead of slipping off.

Zipper3/4 zip


The zip is a 3/4 zip that opens up to around the waist. It has a large zipper on it that seems like it will be reliable and have plenty of longevity. There is a baffle that covers the inside of the zipper. I love this feature because this adds comfort to the bag and also prevents cold air from coming in through the zipper. The 3/4 zip makes it a little more effort to get into the bag, but I feel the benefits outweigh this. It saves on weight and also adds warmth. One downside could be allowing for a foot vent while sleeping if you are someone who runs hot.

Compression Sack vertical measurementCompression Sack horizontal measurementCompression sack for the spark women's sleeping bag

Compression Sack

The Spark sleeping bag comes with a high quality compression sack that has 4 compression straps and can get the bag down to around 5″ wide and 10″ long when fully compressed.

It also comes with a ventilated storage bag for when the bag is not use. Which is in the form of a cube. I particularly like this because it makes it more easy to store. As opposed to the normal shapeless laundry bag that you normally get with down sleeping bags.

Water resistant hood and foot box


Water Resistant Hood And Foot Box

Another well thought through feature of this sleeping bag are the water resistant hood and foot box. These are the areas of the sleeping bag to get the most compromised when raining. Especially in a small tent, as they will most likely be the parts of the bag to touch the walls of the tent.


Want to come backpacking with Steph?

Join one of her outdoor adventures this summer!

Check out her event calendar here:  Altitude Attitude Calendar 

Sea To Summit Spark Womens Down Sleeping Bag Specs

Sea To Summit Spark Womens Down Sleeping Bag Images

We try to get as many images of the Sea To Summit Spark Womens Down Sleeping Bag, but forgive us if they're not all there.


Sea To Summit Spark Womens Down Sleeping Bag User Reviews

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