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Coleman
Big Bay Mummy Sleeping Bag: 20F Synthetic

4.625 out of 5 stars
16 Reviews

Out of Stock

Don't worry though, we have a lot more Synthetic Sleeping Bags in stock than that.

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Why We Like The Big Bay Mummy Sleeping Bag

Whether we are car camping in the woods or enjoying some backyard campouts we turn to the Coleman Big Bay Mummy Sleeping Bag. This synthetic bag offers a slightly relaxed mummy shape and lofty synthetic insulation that combine to keep us warm and comfortable.


Details

  • Warm and comfortable sleeping bag built for nights outside
  • Durable face fabric helps handle daily wear and tear
  • Synthetic insulation offers lightweight and lofty warmth
  • Mummy design locks in heat while remaining packable
  • Thermo lock zipper prevents cold drafts from sneaking in
  • Fleece-lined foot box with ventilation customizes your comfort
  • Item #CMNK16X

This item is made with PFAS chemicals and cannot be shipped to some states. View Shipping Policy

Material
synthetic
Insulation
Coletherm MAX
Shape
mummy
Zipper
full-length ZipPlow
Shoulder Circumference
64in
Bag Length
79in
Draft Tube
Thermolock
Pockets
none
Pad Retainer
no
Venting
footbox zipper
Degree
20F
Stuff Sack
compressible
Activity
weekend camping
Manufacturer Warranty
limited lifetime

What do you think about this product?

Overall Rating

4.5 based on 16 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 1 reviews
3 Stars - 1 reviews
4 Stars - 1 reviews
5 Stars - 13 reviews

Customer Images

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2 out of 5 stars

December 9, 2024

😒😒 This bag won't keep you warm, 'cause the bag is too bright. It's obvious that someone hasn't been outdoors! Remember, dark colors absorb the heat and bright colors reflect.

Survivor56
coleman.com

Originally reviewed on coleman.com

3 out of 5 stars

March 12, 2024

Update your design

The zipper design is off, it opens fantastic but does not close great, the location of the pull should be in the center of the part then links the teeth, not on the end that closes the zipper. Move it to the middle and add a tether on the pull on the inside to match the outside pull. The bag is very warm.

Slsmith618
coleman.com

Originally reviewed on coleman.com

5 out of 5 stars

August 20, 2022

Very comfortable & warm sleeping bag

[This review was collected as part of a promotion.] This high quality sleeping bag is excellent for camping and tailgating! The material is very spacious for my bigger size and still is lightweight enough that it’s not real heavy to weigh down while carrying in its bag and is perfect to bring along for keeping toasty warm during the late night and early morning chills.

user image
JCar1
coleman.com

Originally reviewed on coleman.com

4 out of 5 stars

April 29, 2022

Reminded me of mum.

[This review was collected as part of a promotion.] I first used this camping in my backyard with my son. It was march in Idaho. It got down to 25 degrees F. I was enough. I am 6 ft 1. It didn't wrap around my head as much as I would have liked. I would have preferred a bigger deeper hood. The zipper is an anti-snag zipper and it didn't snag. There is a nice warm fleece coating around the feet. I didn't like the face cover and would prefer the top of my head be covered better.

grizzibehr
coleman.com

Originally reviewed on coleman.com

5 out of 5 stars

April 14, 2022

Very comfortable

[This review was collected as part of a promotion.] This sleeping bag is awesome and the vibrant color is top notch. The over all feel of the bag is very soft and it’s long. The zippers are durable, made it a way that you won’t accidentally zip up the bag and ruin it and I like that it zips up like a true mummy sleeping bag. I go camping in Idaho a lot and it keeps me warm during summer camping trips, my entire family wants one now.

user image
MrRog
coleman.com

Originally reviewed on coleman.com

5 out of 5 stars

April 14, 2022

Kept me warm all night!

[This review was collected as part of a promotion.] I got this sleeping bag to use while camping in a tent at the beach. I’m sure it was about 40 degrees and I stayed very warm all night. I didn’t even need heavy pajamas. It is very plush and comfy. The material feels great. It’s made really well, the zipper is smooth and you can even zip it so your face is warm. If you get too hot you can unzip the foot area to get a little air. Everything about it is totally worth the money. Highly recommend!

lilbenceleste
coleman.com

Originally reviewed on coleman.com

5 out of 5 stars

April 12, 2022

cozy sleeping bag

[This review was collected as part of a promotion.] I am very excited to use this camping. I took it out of the case - but haven't slept in it outside. But I am very excited about this sleeping bag. We camp in tents in the Pacific NW and I tend to be cold when I camp for several reasons, including not liking to wear a ton of layers when I sleep. I love that this is geared for 20 degrees temp. The shape of the sleeping bag is contoured, so your feet are snuggly especially with the fleece footbox. I am so excited about this sleeping bag. Coleman is also a solid brand that we have used for multiple camping items.

Portlandmom
coleman.com

Originally reviewed on coleman.com

5 out of 5 stars

April 7, 2022

Nice bag with great features

[This review was collected as part of a promotion.] I used this bag in near freezing temperatures and a warm, humid night and was comfortable in both. The ability to stick your feet out allows you to cool off in the middle of the night if you get too toasty in your bag, or just to keep from getting to warm to begin with in warm temps. Very good quality, as Coleman always is.

HeartShapedPockets
coleman.com

Originally reviewed on coleman.com

5 out of 5 stars

April 6, 2022

The go to sleepingbag

[This review was collected as part of a promotion.] This is such a great sleeping bag. I used it this past weekend while camping and was astonished at how well it insulated me...it was like an oven! The material is soft and cool to the touch which is nice. Lightweight too!

NuMan
coleman.com

Originally reviewed on coleman.com

5 out of 5 stars

March 24, 2022

Comfortable, lightweight, and warm

[This review was collected as part of a promotion.] In the Colorado Rockies, the temperatures at night can vary significantly from one day to the next. This sleeping bag held its own against the changing conditions and maintained my comfort and core temps while camping this weekend for Spring Break. This sleeping bag is well made with sufficient space for even the largest guy in our party.

Nikkisblu
coleman.com

Originally reviewed on coleman.com

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