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
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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 |
Your All‑Season, All‑Purpose Sleep Solution
Compare ATEPA Sleeping Bags - Coldmaster™ Down Series
ELEMENTS 450
€141,95
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ELEMENTS 600
€131,95
|
BULWARK 300
€121,95
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PEAKVENT 520
€151,95
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COCOON HUG E2 400
€131,95
|
SEATTLE 300
€101,95
|
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|---|---|---|---|---|---|---|
| Temperature Rating | Comfort: 42.8°F (6°C) Limit: 33.8°F (1°C) Extreme: 6.8°F (-14°C) | Comfort: 39.2°F (4°C) Limit: 30.2°F (-1°C) Extreme: 3.2°F (-16°C) | Comfort: 53.6°F (12°C) Limit: 44.6°F (7°C) Extreme: 26.6°F (-3°C) | Comfort: 42.8°F (6°C) Limit: 33.8°F (1°C) Extreme: 6.8°F (-14°C) | Comfort: 44.6°F (7°C) Limit: 35.6°F (2°C) Extreme: 10.4°F (-12°C) | Comfort: 53.6°F (12°C) Limit: 44.6°F (7°C) Extreme: 26.6°F (-3°C) |
| Unfolded Dimensions | 86.6 x 31.5 inches | 88.6 x 35.4 inches | 78.7 x 33.5 inches | 78.7 x 33.5 inches | 86.6 x 29.5 inches | 74.8 x 29.5 inches |
| Packed Dimensions | 13.78 x ø7.48 in | 14.17 x ø7.87 in | 11.8 x ø6.7 in | 13.78x ø7.87 in | 13.4 x ø6.7 in | 13 x ø6.3 in |
| Capacity | 1 Person | 1 Person | 1 Person | 1 Person | 1 Person | 1 Person |
| Weight | 1KG (2.2 LBS) | 1.5KG (3.3 LBS) | 1.15KG (2.5 LBS) | 1.52KG (3.4 LBS) | 1.2KG (2.65 LBS) | 0.5KG (1.1 LBS) |
| Filling Material | Coldmaster™ Down 450G; Down Fill Power: FP700 (US Standard) | Coldmaster™ Down 600G; Down Fill Power: FP650+ (US Standard) | Coldmaster™ Down 300G; Down Fill Power: FP650+ (US Standard) | Coldmaster™ Down 360G; Down Fill Power: FP700 (US Standard) | Coldmaster™ Down 400G; Down Fill Power: FP650+ (US Standard) | Coldmaster™ Down 300G; Down Fill Power: FP650+ (US Standard) |
| Filling Weight | 450g | 600g | 300g | 360g | 400g | 300g |
| Features | Mummy‑Style Fit – Body‑hugging design reduces heat loss. | 1. Extra‑Wide & Extended Size; 2. 3‑Way Sleep System: Bag, Blanket, Poncho; 3. Detachable Hood – Add or remove warmth as needed; customize your sleep setup; 4. Two Bags Zip Together into a Double. | 1. 3‑in‑1 Convertible System – Use the top as a solo blanket; attach the bottom sleeve to your own inflatable pad; 2. Expanded 3D Foot Box – Extra space at the foot‑section connection gives your feet room to move. | 1. 3‑in‑1 Versatility – Use it as a full sleeping bag, a standalone blanket, or attach it to your favorite inflatable pad; 2. Detachable Top Layer – Converts instantly into a solo blanket for lounging or warmer nights; 3. Roomy 3D Foot Box – Extra volume gives your feet space to move; foot section can be fully opened. | 1. 3‑Way Sleep System: Bag, Blanket, Poncho; 2. Detachable Hood – Add or remove warmth as needed; customize your sleep setup. | 1. Two Bags Zip Together into a Double; 2. 2‑Way Function – Use it as a cozy sleeping bag or unfold it into a soft, practical blanket. |
| Shell Fabric | 15D 480T Nylon Ripstop (Recycled) | 20D 400T Recycled Nylon Taffeta(Down‑proof treated, Water‑Repellent Grade 4) | 20D 400T Recycled Nylon Taffeta(Down‑proof treated, Water‑Repellent Grade 4) | 20D 400T Recycled Nylon Taffeta(Down‑proof treated, Water‑Repellent Grade 4) | 20D 400T Recycled Nylon Taffeta(Down‑proof treated, Water‑Repellent Grade 4) | 100% Nylon, 15D |
| Lining Material | 20D 400T Nylon Taffeta (Recycled) | 20D 400T Recycled Nylon Taffeta(Down‑proof treated, Water‑Repellent Grade 4) | 20D 400T Recycled Nylon Taffeta(Down‑proof treated, Water‑Repellent Grade 4) | 20D 400T Recycled Nylon Taffeta(Down‑proof treated, Water‑Repellent Grade 4) | 20D 400T Recycled Nylon Taffeta(Down‑proof treated, Water‑Repellent Grade 4) | 100% Nylon, 15D |
| Outer Bag | Compression Sack | Compression Sack | Compression Sack | Compression Sack | Compression Sack | Compression Sack |
| Shape & Fit | Mummy | Rectangular / Envelope | Semi-rectangular | Semi-rectangular | Rectangular / Envelope | Rectangular / Envelope |
