Sea to Summit

Sea to Summit Ascent 25-Degree Down Sleeping Bag

Name: Sea to Summit Ascent 25-Degree Down Sleeping Bag
Brand: Sea to Summit
SKU: JC5443

4.6(54)

$610.50

sizeS

71+ bought in the past month

About this item

25-degree Fahrenheit (-4-degree Celsius) down sleeping bag for 2-season, warm weather backpacking; mummy style features shaped hood, draft collar, and zipper draft tube
750 fill power down insulation (Responsible Down Standard certified) treated with ULTRA-DRY Down to improve reaction to moisture, retaining loft and performance
Lightweight 20D nylon shell; YKK zippers with full-length right-side zip, half-length left-side zip, and foot zip for ventilation and versatility; internal pocket for small essentials
Relaxed mummy shape offers more room between hips and knees for a natural sleeping position; vertical baffles over the chest prevent down fill from shifting
Long size bag has a max user height of six feet six inches; bag weighs 2 pounds; compresses to 6.4 liters with included Ultra-Sil compression sack

$610.50

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Product details

Brand	Sea to Summit
Color	tan
Occupancy	1 Person
Shape	Mummy
Seasons	All Seasons
Temperature Rating	25°F
Age Range (Description)	Adult
Special Feature	Lightweight
Material	Nylon
Fill Material	Down

Technical specifications

item_package_dimensions_l_x_w_x_h	18 x 13 x 8 inches
package_weight	1.18 Kilograms
item_dimensions_lxwxh	87 x 32 x 3 inches
item_weight	1086 Grams
brand_name	Sea to Summit
warranty_description	Manufacturer guarantee against defects in materials or workmanship for the lifetime of the product
color	tan
material	Nylon
suggested_users	unisex
manufacturer	Sea to Summit
part_number	S1112
model_year	2021
style	25-degree
outer_material	Nylon
fill_material_type	Down
size	Long
best_sellers_rank	#1,447,954 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #2,032 in Camping Sleeping Bags
date_first_available	August 15, 2019

From the brand

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Customer reviews

4.654 ratings

5★88%
4★13%
3★0%
2★0%
1★0%

★★★★★

Best so far

Mike—January 4, 2025✓ Verified purchase

This is the best bag I've ever tried. It got to 12degrees tho I had a liner was completely warm. Great foot ventilation on warmer nights. Would buy again. Read more

★★★★★

Best sleeping bag I've ever owned!

J. Padilla—October 3, 2023✓ Verified purchase

As a big guy I like the fact that this works as a quilt too, I camped in 45 degree weather this weekend and this thing had me waking up a bit sweaty in the night. Paired with the Xtherm neo air and man ive never been so warm and cozy in a tent. Love this bag. Read more

★★★★★

Very nice bag — if you’re skinny

Michael A. Thomas—January 15, 2023✓ Verified purchase

I’m not skinny, so I had to return it. I also prefer a right hand zip bag, so two strikes. Sea to Summit makes really nice bags, though, and this one struck me no differently, so if you are cool with left hand zip and you don’t have broad shoulders, give it a go. Read more

★★★★☆

Nice bag but it isn't for me.

CHUCK—January 7, 2024✓ Verified purchase

This bag has excellent features and looks to be very well made. Unfortunately for me it is not a good choice. I own numerous bags from mummy to rectangular and rated from temperatures of 0°F to 40°F+. I was hoping this bag would be more comfortable than the mummy bags I have and more like the semi-rectangular bags I have. While the foot box is really nice, the shoulder room is as confining as my smallest mummy bag. I felt trapped in it after 30 seconds. For reference; I am 6' tall and 190lbs. Read more

★★★★★

High quality bag

PH in Utah—August 16, 2020✓ Verified purchase

Have yet to use the bag but it’s clear this is a lightweight high quality bag that is well thought out. The zippers did not bind and I love how you can vent the chest area with zippers on both sides. The foot bed has space for my size 12 feet and also a vent zipper for the feet. Overall very happy with this purchase Read more

★★★★★

Is like sleeping on heaven

Jose Bautista—January 29, 2023✓ Verified purchase

Camping Read more

★★★★★

Light and warm!

Customer—January 22, 2020✓ Verified purchase

Super light to backpack with. And super warm when you needed to be. Reducing my pack size was my goal and this did just that. Read more

★★★★★

Super comfortable

Yvonne—December 19, 2019✓ Verified purchase

This product worked amazingly. My body temp was perfect. I didn't sweat and I didn't get cold. This is an awesome product and definitely worth the price Read more