Coldmaster Down Mummy Sleeping Bag 9℉ / 42.8℉ Black

SKU: AS2471_BLACK_L
Sale price$139.99 Regular price$169.99
Save 18%
4.8

Color: Black

Coldmaster Down

Looking for warm enough sleeping bag with affordable price? The ATEPA Coldmaster Down Sleeping Bag is the trending technology with mixed down materials (55% white duck down + 45% renewable cotton).

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Compared nature down, Coldmaster down offers even warmth with with no cold spots, (7% difference only) but perform better in wet environment (Moisture-proog) with superior insulation.

Eco-Friendly Materials

Made with premium 15D/20D ripstop nylon and filled with 55% white duck down, the ATEPA Coldmaster is as durable as it is sustainable. Its water-resistant, tear-proof materials make it stand out among the best backpacking sleeping bags. Enjoy top-tier performance while reducing your environmental footprint—every adventure, guilt-free.

Temperature Rating

From a cozy 6°C (42.8°F) to a rugged -13°C (8.6°F), the ATEPA Coldmaster is built to handle a variety of outdoor conditions. Lightweight and versatile, it’s ideal for solo explorers seeking warmth and comfort. A true ultralight sleeping bag designed for all seasons, it’s the perfect companion for your adventures.

Curved Baffle

Say goodbye to cold spots! The ATEPA Coldmaster sleeping bag features a curved baffle design that ensures the filling stays in place, providing even warmth throughout the night. Designed for extreme conditions, it’s your reliable choice for everything from a cozy camping sleeping bag to a dependable 0-degree sleeping bag.

3D Hood Design

Keep your head cozy with our adjustable 3D hood design, tailored to provide full insulation without sacrificing breathability. Whether you’re on a chilly backpacking sleeping bag adventure or just need an all-season camping sleeping bag, this feature ensures you stay warm and comfortable in any weather.

Ergonomic Footbox

Our trapezoidal footbox is engineered to mimic the natural shape of your feet, giving you more space where you need it most. Forget about cold toes! This thoughtful design ensures unparalleled comfort during your outdoor journeys, no matter the conditions.

Versatile Outdoor

Whether you’re camping in the woods, trekking through mountain trails, or setting up base camp in cold weather, the ATEPA Coldmaster has you covered. Designed to perform in all environments, this camping sleeping bag is a lightweight, high-performance choice for outdoor enthusiasts seeking comfort and warmth wherever they go.

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Dream Products

Looking for dream sleeping bag in your journey? Coldmaster down sleeping get you covered!

Down Fill

0.99 lbs/450g

0.88 lbs/400g

1.3 lbs/600g

Made With

55% White Duck Down + 45% Renewable Cotton

55% White Duck Down + 45% Renewable Cotton

51% White Duck Down + 49% Qingdao Cotton

Fill Power

650

650

650

Moisture-Proof

Yes

Yes

Yes

Material

400T 20D Nylon

400T 20D Nylon

400T 20D Nylon

Specs

Product Size: 220×80×55 cm / (86.6+31.5)×21.7 in

Packed Size: 35×19×19 cm / 13.78×7.48×7.48 in

Weight: 1 kg / 2.2 lbs

Fabric: 100% Nylon – 15D480T Ripstop Nylon (recycled)

Lining: 100% Nylon – 20D400T Plain Weave Nylon (recycled)

Filling: Coldmaster™ MIX 450G (55% 90/10 U.S. Standard White Duck Down + 45% Recycled Fiberfill)

Outer Bag Material: 100% Polyester (210D Oxford Fabric)

Temperature Rating:

  • Comfort: 43°F/6°C
  • Lower Limit: 34°F/1°C
  • Extreme: 9°F/−13°C

Product Details

Customer Reviews

Based on 24 reviews
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ye
great product but not for freezing temperature

I absolutely love this sleeping bag. It is very light, compact, easy to pack, and well-made. However, I do not believe it is good enough for 20F degree weather unless you wear super warm clothes and add a blanket inside. It's perfect for 40F, 50F weather.

L
Lynn northern
Small

This bag packs down super small and is very light. Exactly what I was looking for. I haven’t used it yet, hopefully it keeps me warm enough in the mountains.

T
Thomas H.
Good quality

Good quality, excellent loft. Kept us warm in temps in the high 30's (f).

A
Ashley Da Vault
good bag

the bag is thin and easy to put back away, so the thin part is not giving you a bed of comfort. the bag is well made. The zipper is great the material is great. i cant say that it's great in freezing weather but its good in the upper 30's. The bag holds me just fine i am 6ft and 230 lbs. The bag is a good deal for what it cost.

J
Justin
Very impressive backpacking sleeping bag. It’s better quality than some high priced bags!

Used this last night and it’s WAY BETTER THAN I THOUGHT! This sleeping bag looks, Feels, operates like a more premium sleeping bag. I slept outside last night using this sleeping bag. It was’t extremely cold around 42 degrees. I stayed warm and cozy all night. This bag really hits way above its level. It uses Dow duck feathers 650 fill if I remember correctly. The zippers are super smooth, It goes in the bag easy it’s really compact. I’m fairly new to backpacking but I’m honestly blown away with the quality of this sleeping bag. This bag has a hood that does a good job of keeping the heat on the inside. This sleeping bag company is a smaller company that’s fairly new and I can honestly say if they keep up the work like this they are going to be huge in the backpacking community. This isn’t like a Coleman you get this is a high quality lightweight sleeping bag.Only complaint I have is that this sleeping bag is alittle small imo. Unfortunately all these backpacking sleeping bags are small like this one. Unless you get a quilt style or XL type you will be dealing with this on any brand sleeping bag that’s for backpacking.Looking this sleeping bag over you can tell it’s a quality bag. It might not be the same as a 600 bag but it definitely hits above its level.