ATEPA COCOON HUG E2 400 Ultralight Coldmaster™ Down Sleeping Bag, 35°F 3-Season Backpacking Bag with Detachable Hood

One Bag, Three Ways to Sleep. The Ultimate 3-in-1 Sleep System.

Sleep warmer, pack lighter, and stay more comfortable outdoors with the ATEPA COCOON HUG E2 400 Coldmaster™ Down Sleeping Bag. Designed for backpacking, camping, road trips, and cool-weather outdoor adventures, this ultralight 3-season sleeping bag combines 650+ fill power white duck down with renewable high-loft cotton for reliable warmth, better moisture resistance, and excellent compressibility.

With an ISO-tested comfort rating of 44.6°F and a lower limit of 35.6°F, the COCOON HUG E2 400 is built for spring, fall, and cool summer nights. Its versatile envelope-style design can be used as a traditional sleeping bag, opened into a blanket, worn as a shawl, or connected with a sleeping pad using the included webbing straps.

Key Features

• Coldmaster™ Down Hybrid Insulation
  Filled with 400g of Coldmaster™ Down, a tested blend of 55% 90/10 white duck down and 45% renewable high-loft cotton. This hybrid fill helps increase warmth, improve rebound, reduce moisture absorption, and perform better than ordinary down in damp conditions.
• Ultralight & Packable for Camping and Backpacking
  Weighing only 2.65 lbs, this sleeping bag packs down to 13.4" x 6.7", making it easy to carry in a backpack, car camping setup, or travel gear bag.
• 3-Way Versatile Sleep System
  Use it as a sleeping bag, open it fully as a blanket or quilt, or wear it as a warm shawl around camp. The removable hood lets you adjust warmth based on the weather.
• Detachable Hood for Custom Comfort
  Add the hood for colder nights or remove it when you want a more relaxed blanket-style setup.
• Sleeping Pad Compatible
  Includes 3 mat combination webbing straps, allowing you to connect the sleeping bag with a sleeping pad to reduce shifting while you sleep.
• Warmth-Retaining Details
  A zipper draft tube, adjustable hood drawcord, and secure collar zipper tab help block cold air and keep warmth inside throughout the night.
• Foot Vent for Temperature Control
  The zipper opening at the foot lets you release heat when temperatures rise, helping prevent overheating during the night.
• Soft, Durable, Water-Repellent Fabric
  Made with 20D 400T recycled nylon taffeta for both shell and lining. The fabric is down-proof treated and water-repellent, offering a soft feel while helping protect the insulation.
• Eco-Conscious Material Choice
  The recycled nylon fabric and renewable cotton blend filling make this sleeping bag a more environmentally mindful option for outdoor users.

Specifications

Attribute	Details
Product Name	ATEPA COCOON HUG E2 400
Capacity	1 Person
Shape	Rectangular / Envelope
Open Size	86.6" x 29.5"
Packed Size	13.4" x 6.7"
Weight	2.65 lbs
Fill	Coldmaster™ Down 400g
Fill Power	650+ FP, US Standard
Shell Fabric	20D 400T Recycled Nylon Taffeta
Lining	20D 400T Recycled Nylon Taffeta
Water Repellency	Grade 4
Comfort Temperature	44.6°F / 7°C
Lower Limit	35.6°F / 2°C
Extreme Rating	10.4°F / -12°C
Included	Sleeping Bag, Compression Sack, 3 Webbing Straps