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Atepa

ATEPA Ultralight 650+ FP Duck Down Sleeping Bag

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Ultralight 650+

Fill power white duck down

Uses 300g

15D ripstop nylon construction

Rated Comfort

50°F+ stated in the title

Compresses 13"

X 6.3" for compact packing

Full-length #3

YKK zipper opens flat for

$89.99
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SKU: atepa-seattle-300-down-envelope-sleeping-bag

Overview

Built for three-season trips, this sleeping bag is aimed at backpackers, hikers, and campers who want a compact sleep system without extra bulk. It uses 650+ fill power white duck down and a 15D ripstop nylon shell, with a design that can open fully into blanket mode for added versatility around camp or in a cabin. The bag is also set up for shared use, since two units can be zipped together vertically to create a double sleeping bag. With its included compression sack and lightweight packable form, it suits travelers who need easy storage and a simple setup for camping, van life, or emergency bedding.

Why Hunters Choose the Atepa

650+ Fill

Power white duck down for

15d Ripstop

Nylon shell and lining for

Compresses 13

X 6.3 inches for easier

Full-length #3

YKK zipper opens fully for

Can Zip

Two bags together for a

Key Features

  • Ultralight 650+ fill power white duck down sleeping bag for 3-season use.
  • Uses 300g of down with 15D ripstop nylon construction.
  • Rated for comfort from 44°F to 54°F, with 50°F+ stated in the title.
  • Compresses to 13" x 6.3" for compact packing.
  • Full-length #3 YKK zipper opens flat for quilt or mat use.
  • Can zip two bags together vertically for a double sleeping bag.
  • Includes compression sack and storage bag; listed weight is 1.1 lbs.

Best Used For

  • Solo backpackers needing a compact, lightweight sleep system for three-season trips.
  • Hikers and campers wanting a down bag that packs small for limited backpack space.
  • Couples looking for a zip-together option for shared warmth in camp.
  • Car campers or cabin users who want a versatile quilt-or-bag setup.
  • Users needing an emergency bedding option for van life or backup shelter use.

Specifications

Compression SackIncluded
ConvertibleBlanket mode; can zip two bags vertically to create a double sleeping bag
Dimensions74.8" x 29.5"
Down Weight300g
Fill MaterialWhite duck down
Fill Power650+
Foot LoopsDual foot loops
Hood DrawcordFlat-ribbon hood drawcord
Includes1x Sleeping Bag; 1x Storage Bag
Lining Material15D nylon
Packed Size13" x 6.3"
Shell Material15D ripstop nylon
Temperature Rating44°F to 54°F
Use Type3-season
Water RepellentCalendered water-repellent shell
Weight17.6 oz
ZipperFull-length #3 YKK zipper

Pros

  • 650+ fill power white duck down for compact, lightweight insulation
  • 15D ripstop nylon shell and lining for a lighter, packable build
  • Compresses to 13 x 6.3 inches for easier storage in a pack
  • Full-length #3 YKK zipper opens fully for quilt or mat use
  • Can zip two bags together for a double sleeping setup
  • Includes compression sack and storage bag for transport and storage

Considerations & Trade-offs

  • Temperature range is listed as 44°F to 54°F, so it is best suited to milder 3-season conditions rather than colder-weather trips.
  • The compact packed size and 1.1 lb weight are strong for backpacking, but the bag is still a down-filled model that benefits from careful packing and dry storage.
  • The full-length zipper and blanket mode add versatility, though that also means more configuration choices and potential heat loss compared with a fully enclosed setup.
  • The vertical zip-together feature is useful for couples, but it depends on having a second compatible bag to take advantage of it.

Suggested Comparisons

  • Backpacking sleeping bags
  • Quilt-style sleeping bags
  • Three-season sleeping bags
  • Sleeping bag liners

Suggested Accessories

  • Sleeping bag liner
  • Compression sack
  • Sleeping pad
  • Pillow

Frequently Asked Questions

What temperature range is this sleeping bag intended for?

The product description says it is a 3-season sleeping bag and lists a warmth range of 44°F to 54°F. It is also described as a 50°F+ bag in the title and short description.

Can this sleeping bag be used as a quilt or blanket?

Yes. The full-length #3 YKK zipper opens completely, allowing it to be used in blanket mode as a quilt or mat.

Is this sleeping bag suitable for two people?

The description says two bags can be zipped together vertically to create a double sleeping bag. It does not provide any additional details about fit for two people beyond that.

What comes included with the sleeping bag?

The package includes 1 sleeping bag and 1 storage bag. A compression sack is also mentioned in the description.

How packable is it for backpacking?

The description says it compresses to 13" x 6.3" and weighs 1.1 lbs, making it a compact option for backpacking and other travel-focused use.