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Load image into Gallery viewer, ATEPA Elements 450 Coldmaster™ Mummy Sleeping Bag 42.8°F to 8.6°F Spacious with 650FP White Duck Down
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Vendor ATEPA

ATEPA Elements 450 Coldmaster™ Mummy Sleeping Bag 42.8°F to 6.8°F

Regular price $139.99 USD
Sale price $139.99 USD Regular price $139.99 USD
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Color:
Black
Green

SKU: AS2471_BLACK_L

FAST SHIPPING

EASY RETURN

SECURE PAYMENT

Pairs well with

ATEPA Elements 450 Coldmaster™ Mummy Sleeping Bag | 700FP Recycled Down Blend, Ultralight 3-Season Backpacking & Camping Gear:

Stay warm and pack light with the ATEPA Elements 450 Coldmaster™ Sleeping Bag, engineered for backpackers who refuse to compromise between sustainability, weight, and performance. With a 700FP recycled down blend and precision mummy shaping, this 3-season sleeping bag delivers reliable warmth in temperatures as low as -14°C (6.8°F), all while compressing to the size of a hydration bladder.


KEY FEATURES

🔹 Advanced Coldmaster™ Insulation
A 55% RDS-certified duck down + 45% recycled cotton blend offers the loft of premium down with enhanced moisture resistance. The 450g fill weight and 700 fill power strike the ideal balance of warmth and packability.

🔹 Ultralight & Ultra-Compact
Weighing just 2.2 lbs, the sleeping bag compresses to 13.78” x 7.48” in its included compression sack—saving crucial space in your backpack or carry-on.

🔹 All-Season Versatility
Rated from 42.8°F to 6.8°F (6°C to -14°C), this bag adapts to spring, fall, and winter conditions. The 3D footbox and contoured hood eliminate cold spots while accommodating users up to 6’5”.

🔹 Eco-Conscious Construction
GRS-certified 15D recycled nylon shell and liner reduce environmental impact without sacrificing durability, moisture resistance, or tear strength.

🔹 Thoughtful Trail-Ready Design

  • YKK self-locking anti-snag zippers

  • Internal security pocket for phones/essentials

  • Draft collar with adjustable drawstring

  • Mesh storage bag to maintain loft during storage


TECH SPECS

  • Temperature Rating:

    • Tested Comfort: 42.8 degrees (F) - ISO
    • Tested Lower Limit: 33.8 degrees (F) - ISO
    • Tested Extreme: 6.8 degrees (F) - ISO

     

  • Fill: 450g 700FP Coldmaster™ MIX (55% down + 45% recycled cotton)

  • Fabric: 15D 480T Recycled Nylon Shell + 20D 400T Nylon Liner

  • Packed Size: 13.78” x 7.48”

  • Weight: 2.2 lbs (1 kg)

  • Dimensions: 86.6” x 31.5” (Fits users up to 6’5”)


IDEAL FOR

  • Backpacking & Thru-Hiking

  • Cold-Weather Camping

  • Alpine Mountaineering

  • Travel & Ultralight Adventures

 

Gear Up Smarter
The ATEPA Elements 450 combines ethical materials, intelligent design, and trail-proof durability—helping you explore further while leaving a lighter footprint.

ATEPA Elements 450 Coldmaster™ Mummy Sleeping Bag 42.8°F to 8.6°F
ATEPA Elements 450 Coldmaster™ Mummy Sleeping Bag 42.8°F to 8.6°F
ATEPA Elements 450 Coldmaster™ Mummy Sleeping Bag 42.8°F to 8.6°F
ATEPA Elements 450 Coldmaster™ Mummy Sleeping Bag 42.8°F to 8.6°F
ATEPA Elements 450 Coldmaster™ Mummy Sleeping Bag 42.8°F to 8.6°F
ATEPA Elements 450 Coldmaster™ Mummy Sleeping Bag 42.8°F to 8.6°F
ATEPA Elements 450 Coldmaster™ Mummy Sleeping Bag 42.8°F to 8.6°F
ATEPA Elements 450 Coldmaster™ Mummy Sleeping Bag 42.8°F to 8.6°F
ATEPA Elements 450 Coldmaster™ Mummy Sleeping Bag 42.8°F to 8.6°F
Your All‑Season, All‑Purpose Sleep Solution

Compare ATEPA Sleeping Bags - Coldmaster™ Down Series

ATEPA Elements 450 Coldmaster™ Mummy Sleeping Bag 42.8°F to 6.8°F
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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: 30.2°F (-1°C) Limit: 17.6°F (-8°C) Extreme: -14.8°F (-26°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 82.68 x 37.4 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 15 x ø9 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) 1.65KG (3.64 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 850G; Down Fill Power: FP650+ (US Standard)
Filling Weight 450g 600g 300g 360g 400g 850g
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. 850g 650FP down, 17.6°F limit rating, ultralight 20D nylon shell, YKK zipper, dual compression sacks, and a spacious 82.68" x 37.4" cut for comfortable turning.
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) 20D 400T Recycled Nylon Taffeta(Down‑proof treated, Water‑Repellent Grade 4)
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) 20D 400T Recycled Nylon Taffeta(Down‑proof treated, Water‑Repellent Grade 4)
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 Mummy
  • 5 stars: 15 (88%)
  • 4 stars: 2 (12%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
J
John Freddy Suarez
Buena calidad entrega a tiempo

Buena calidad llego a tiempo

A
Anonymous
My grandson loves it

My grandson loves it, keeps him warm during winter ca.ping

Thank you so much for sharing this heartwarming feedback about the ATEPA Elements 450 Coldmaster™ Mummy Sleeping Bag!

We are absolutely delighted to hear that your grandson loves it and that it’s keeping him warm and cozy during the winter months. Our Coldmaster™ line was designed with exactly that in mind — providing reliable warmth and comfort even in chilly conditions, so knowing it’s working perfectly for him truly makes our day.

If you or your grandson ever have questions about care, storage, or using the sleeping bag in different seasons, please don’t hesitate to reach out. We’re always here to help.

Thanks again for choosing Broadout. Wishing you and your grandson many more warm and wonderful adventures ahead!

Stay cozy,
The Broadout Team

d
dspowell
Good lightweight bag

Nice lightweight camping bag. Good for moderate temps when a subzero bag is not needed.

V
V Nguyen
Great snuggle for the value

We needed a cheap but quality sleeping bag that works well for our occasional camping trip. We used a sleeping bag from Walmart and it was not good at all. I still felt cold and it was not a fun time. This changed my experience drastically. The travel case was a nice bonus.

r
rosa
Good quality

Very warm and comfortable

J
Janelle Rau-Clauson
Quality sleeping bag

Very warm. Just as good as our bags that were twice the cost.

N
Nhorses
Great sleeping bag

Great sleeping bag. Rolls up compact and a great size for my pre-teen boy.

G
Gatta
Warm, light, and easy to pack

Got this for my 12-year-old for a one-week camp. I picked the adult size so he can use it longer. It’s super light, really warm, and packs down small in the stuff sack. The fabric feels nice and strong — great for summer trips in the mountains.

X
Xerxes
Provides good warmth and great size for hiking

Color is great, it’s really a cool color. As for function, zippers work well. I tested it out with two nights ranging in about 40-45 degrees F, provides good warmth, I was not cold nor overly hot, got a good nights sleep both nights. It’s super lightweight and compacts down to a small size good for hiking trips.

g
gingersp
Satisfied

Very nice bag kept me warm on a 25 degree night have had a chance to try anything colder I really like that with this one I can roll it up and actually get it back in the bag it came in.

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.

R
Reviewer
Very warm

Super warm and fits one person perfectly

B
BML
It kept my granddaughter toasty warm.

I was grateful that the sleeping bag was delivered in one day! She was very complimentary of the sleeping bag, and she is very picky!

L
Laurie Krokovic
Great camping gear

My son needed a quick option for an activity he was attending, but I wanted something sturdy to last. He said it was very comfortable and kept the temperature very comfortable. He's the size of a man and he covered his entire body with room to spare. He liked the color alot and was able to store it easily. I thought it was a good price and seems like it will last

M
MacRae
Very decent sleeping bags

We bought these for a scouting outing at cold temperatures and they are totally worth it

P
Phoenicia
Outdoor buddy

Perfect for camping or just a sleepover. Great quality. Very soft.