ATEPA ELEMENTS 450 Down Mummy Sleeping Bag

SKU: AS2471_BLACK_L
Sale price$129.994.8

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)

Product Details

Customer Reviews

Based on 5 reviews
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j
jph55
Cozy and Lightweight Sleeping Bag for Chilly Adventures

Camping out under the stars has never been more comfortable! This sleeping bag feels like a warm hug on those frosty nights. It's so light, I can carry it on my hikes without breaking a sweat. The waterproof material is a lifesaver when unexpected rain clouds roll in. Plus, being wearable lets me shuffle around the campsite without leaving my snug cocoon. It's a trusty companion for any outdoor escapade!

P
Paul Denver
Good Quality, a bit Pricey

I've come to really appreciate the ATEPA brand here from the marketplace. This bag is no exception. Great build, superior loft and weight, just a darn good bag to pack in and out.

It's a tad expensive when compared to some of my other bags, but still a solid performer and price window. I would like to see it come down a bit in cost, but when it does this bag is a no-brainer to buy. Good stuff!

V
Veronica
Good Quality, a bit Pricey

I've come to really appreciate the ATEPA brand here from the marketplace. This bag is no exception. Great build, superior loft and weight, just a darn good bag to pack in and out.

It's a tad expensive when compared to some of my other bags, but still a solid performer and price window. I would like to see it come down a bit in cost, but when it does this bag is a no-brainer to buy. Good stuff!

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Veronica
Good Quality, a bit Pricey

I've come to really appreciate the ATEPA brand here from the marketplace. This bag is no exception. Great build, superior loft and weight, just a darn good bag to pack in and out.

It's a tad expensive when compared to some of my other bags, but still a solid performer and price window. I would like to see it come down a bit in cost, but when it does this bag is a no-brainer to buy. Good stuff!

K
Kasey
Nicely made but hand wash only, with a 43F temp rating

Temperature ratings given are inconsistent. Printed on the compression sack is "Comfort: 42.8F/6C, Limit: 33.8F/1C, Extreme: 8.6F/-13C". From my experience, this seems the most accurate, and is the only one which claims standardized testing. ("Temperature Test: EN13537:2012") Everything else has roughly the same numbers, but labeled differently. The range in one of the product images matches, calling 6C/43F "Comfort", 1C/33F "Limit", and -13C/9F "extreme".
The "About this item" area mentions 33-43F as comfortable when it should be "transition", with 9F as 'limited'. Finally, the "Temperature Rating" field is way off at 16-30C (61-86F).

The description also does not mention the bag is rated for hand-wash only. The only basin I have large enough to wash a sleeping bag is my bathtub, but I honestly feel it would be fine in a non-agitating washing machine. Full care instructions state hand wash only, do not bleach, do not tumble dry, do not iron, do not dry clean.

This bag feels very nicely made, and is quite comfortable to sleep in. I'm 6'2" and it's plenty large enough for me. The '3D footbox' mentioned really does help.

I'm somebody who generates a lot of heat while sleeping, and needs either a cold room or few layers. I did some testing, and found that while wearing a base layer (as EN and ISO ratings are written) and wool socks, it was just right at 55F. This lines up with what is printed on the compression sack, and is what I expected given the packability. I don't think you could reasonably expect to be comfortable at 33F.

Back to the construction, though. The shell and lining are on the thin side, but that's expected for how small this bag is when compressed. It still feels very durable. Stitching is all very nice, the two-way YKK zipper works well, and I couldn't find any defects anywhere. There are some really nice features, like a drawstring gusset at the shoulders/neck area to help retain heat, in addition to the drawstring around the 'hood'. As for the internal storage pocket, I like how they located it on the side opposite the zipper. That way, when you open the bag in the morning, you won't fling your phone across the tent. Finally, the hook and loop-closed flap at the top of the zipper will fold and attach to itself, so you don't have the hook side flapping around and snagging on things. Brilliant!

Inconsistencies about thermals and washing aside, I don't have much to complain about. The only thing is the labels; they're on the inside, and really don't feel nice against your feet in the night. At the very least, one is a proper materials label, confirming it is made with duck down and feathers with a polyester shell. It also reveals that KingCamp Outdoor Products Co., Ltd. is the manufacturer.

On the packing and storage front, you receive a compression sack and a larger storage bag. Shoving it into the compression sack wasn't at all difficult, just jam it in, close the drawstring, and use the outside straps to cinch it tightly. It's really nice they included a larger bag for long-term storage, so you don't wreck the insulation's loft.

Despite issues with how this bag is described, I really like it. It's comfortable, made well, and clearly had some proper thought put into its design. Price-wise, it falls in the middle for bags rated ~40F. It doesn't have a fancy name brand to earn the high prices some go for, but the design and quality definitely sets it apart from cheap options. I think that's pretty fair for a nicely-made bag with some very clever design features. I'm just rather annoyed it's listed as hand-wash only, when almost every other bag like it can be machine washed.