Sea to Summit

Sea to Summit Spark Womens Ultralight Down Sleeping Bag

5.0(5)
$549.00
sizeS

284+ bought in the past month

About this item

  • Nylon
  • Imported
  • Women's 15-degree Fahrenheit (-9-degree Celsius) ultralight down sleeping bag for 3-season backpacking, bike packing, and touring; broad mummy shape features hood and zipper draft tubes
  • 850+ fill power down insulation (Responsible Down Standard certified) treated with Ultra-Dry Down to improve reaction to moisture, retaining loft and performance
  • Ultralight 10D nylon shell with PFC-free durable water repellent (DWR) finish keeps the hood and footbox highly water resistant; 10D nylon breathable liner fabric for minimal weight and bulk
  • Women's design features shorter length, narrower shoulder, and wider hip to increase thermal efficiency; down chambers are mapped to a woman's physiology to maximize warmth
  • 15-degree bag features full box baffles for maximum warmth; Sea to Summit Guarantee is offered for the lifetime of this product
$549.00

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Product details
BrandSea to Summit
Occupancy1 Person
ShapeMummy
Seasons3 Seasons
Temperature Rating15°F
Age Range (Description)Adult
SportBackpacking
MaterialNylon
Fill MaterialDown
Product Dimensions77.2"L x 29.9"W
Technical specifications
item_package_dimensions_l_x_w_x_h19.3 x 12.9 x 11.2 inches
package_weight1.23 Kilograms
item_dimensions_lxwxh77.2 x 29.9 x 3 inches
item_weight2.41 Pounds
brand_nameSea to Summit
warranty_descriptionManufacturer guarantee against defects in materials or workmanship for the lifetime of the product
materialNylon
suggested_userswomens
manufacturerSea to Summit
part_number47415
style15-degree
outer_materialNylon
fill_material_typeDown
sizeLong
sport_typeBackpacking
best_sellers_rank#473,362 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #783 in Camping Sleeping Bags
date_first_availableJanuary 26, 2024

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Customer reviews

5.05 ratings
  1. 5100%
  2. 40%
  3. 30%
  4. 20%
  5. 10%
★★★★★

My favorite sleeping bag ever

Hannah HoltSeptember 22, 2025✓ Verified purchase

I love this sleeping bag so much! I camp year round with scouts, and I finally invested in a better bag after freezing through the night a few times. I've never been cold on a campout with this sleeping bag. The summer I use it as a quilt. It's a mummy shape but turns with me when I sleep on my side. It fits easily in my backpacking bag and is nice and light. The whole thing feels smooth as butter. It makes camping luxurious. I wake up happy every time I sleep in it. Read more

★★★★★

There is no better sleeping bag on the market for women backpackers!

Christ HagemanJuly 22, 2024

If you are in the market for a four season backpacking sleeping bag, there literally is no better one on the market. This sleeping bag is the top of the line ultralight down sleeping bag with room at the hips and a little higher rating for people who sleep cold. I'm building out an Overlander, and although I am not a hardcore backpacker and much more of a day hiker, I have been upgrading my gear so I can go longer distances much more comfortably. I far prefer hike in camping to establish sites where I have neighbors with generators. Little worse than being in nature and having to listen to a TV in the neighboring RV. I have never had a better sleeping bag in my life. It's impossible to overestimate how light this is, and how high quality it is. My only issues are personal and not with the sleeping bag itself. I sleep hot, so I will only be able to use this in the winter and shoulder seasons. Even if I use it as a quilt with my feet tucked in. Also, I'm a little bit claustrophobic, so it's much more likely that I will use this as a quilt than a sleeping bag. With that being said, this has already become my favorite quilt. It feels fantastic, and I love the Sea to Summit brand. I already used their cookware, dry bags, and various other small things. This is an amazing sleeping bag! Read more

★★★★★

So nice and light!

doveyJuly 25, 2024

I don’t have the ability to check the cold rating because it’s summer, but it’s very warm! I love that it’s down filled and I can compress the bag down to a very small packing size. When you hike in to a camping site, it’s important to have lightweight gear and this is definitely lightweight, featherlight even! It weighs less than some of my king sized pillows, for reference. I like that it’s designed for women, giving us a more fitted experience than some of the bags that are designed for men who are bulkier in different areas than women are. This is extremely comfortable and I love that it’s so lightweight and comfortable to carry. A must have addition if you require featherlight gear for something like an AT hike or something similar! It is sturdy enough to last you! Read more

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