TETON Sports Celsius Mammoth Double Sleeping Bag: Keeps You Comfortable in Cool Weather

HappyCamper14: We have had this bag for five years, and it has been *amazing* for summer tent camping in the Rockies and late fall and winter tent camping in NW Arkansas.

As everyone else has pretty much covered, it's soft, warm, and difficult to get back in the stuff sack; it's also heavy and takes up quite a bit of room in the vehicle. But the pros far outweigh any cons.

Before moving to Arkansas, we camped in the Sierras regularly, and night time temps in the 20s F in June and early July were pretty typical. We had supposedly warm mummy bags, but my posterior (a-hem) was always like ice, and I would wake up constantly during the night from the cold. My husband is the opposite, he's a furnace when he sleeps. So on our first trip out to Colorado for a week of camping after moving to Arkansas, I knew I needed to harness his heat with a shared bag.

The first night (30s F) with this bag we went to bed with our typical North Face base layers...and we were hot. Next night we slept in regular pajamas (cotton sweats, yoga pants, t-shirts) and were perfect. I had my first night's solid sleep camping as an adult, and I have never looked back.

Since then, we have used it as...

United States on Feb 18, 2021

Ken McDonald: So far I've used this at home as lockdown has prevented any outdoor trips. The sleeping bag is well made and lighter than I expected. It is warm to touch and retains heat very well. The queen size is superb for me (a larger gent) although I think it would be quite tight for two large individuals. There are internal padded edges along the zip line can can snag if one isn't too careful. There is no internal pocket in this sleeping bag, but overall the acid test is 'did it keep me warm'. Yes, it was excellent at retaining body heat, and in milder weather I had to unzip the side and pop me legs outside to cool down a bit. I am delighted with this product, even though I paid additional dollars for import duties into the UK. EDIT:12th July,2022. Correction, this amazing sleeping bag does in fact have a pocket.

United Kingdom on Feb 14, 2021

Elias: Primero que nada PARA GUARDAR EL SLEEPING DE VUELTA EN SU BOLSA sólo basta meterlo hecho bola, uno tiende a pensar que hay que enrollarlo y luego meter el rollo en la bolsa del sleeping, pero resulta que no es así, basta con meter una orilla del sleeping y seguir metiendo el resto del sleeping así hecho bola en la bolsa, sin tener que enrollarlo ni nada, nada más lo metes como puedas y así es el chiste con los sleepings, no tiene ciencia, nada más comenzar por un extremo y seguir metiéndolo sin ningún orden ni técnica. Pueden ver tutoriales si en youtube buscan "How to Stuff the Mammoth Sleeping Bag into its Stuff Sack".

Ahora sí el review:

El sleeping está perfecto, perfecto, es súper resistente, muy acolchadito y extremadamente calientito. Yo nunca había visto un sleeping tan grande como este, tan grande y pesado. Pero lo cierto es que es sumamente calientito. Incluso podría decir que está de más de calientito, yo casi no paso frío pero mi novia sí, así que lo compré esperando que estuviera cómoda mientras acampábamos en el Parque Nacional del Chico, en Hidalgo. Por la noche la temperatura estuvo como a 6 grados y ella estaba sùper cómoda...

Mexico on Sep 05, 2018

Colin Fitzgerald: Incredible quality and workmanship, the material is so soft and durable at the same time. The zippers are durable and they look like they will last for years to come. I love how you are able to open the bag on either side as well and this fits perfectly over our Coleman queen sized air mattress.

I think the coldest we have slept in this bag outside so far is in Banff National Park when it was about 5 or 6 degrees at night after a whole day of rain.
The tent was like an icicle but this sleeping bag was like a furnace.

The bag is so easy to put away as well, just fold the sleeping bag in half and stuff it into the compression sack. I was amazed at how such a huge thing could be stored in such a small bag.

2021 edit:

Still working perfectly. Have been using this sleeping bag with my other half for 3 years and it's still like brand new. Have spent much colder nights since my first review and we have 0 complaints. One trip in Yoho last Fall it went down to about -4C and this thing kept us toasty warm.

Before we go on any camping trip, I take the bag out and let it sit in the sun for a few hours. I then turn it inside out and do this again. I was...

Canada on Aug 28, 2018

Yuliana Arellano: Está súper calientito y suavecito, el problema es para empacarlo nuevamente en la bolsa, necesitas tiempo y paciencia para poder hacerlo y es pesado!! Pero cumple con mis necesidades, que es mantenerme caliente 😊

Mexico on Nov 22, 2017

Amazon Customer: This bag made me like camping again! The things I hate most about camping are being too cold at night, feeling sticky/too hot at night and not having enough room to move my legs around. My husband and I were just camping in Oregon this summer. I think it got down to about 14 degrees celsius (mid '50's?) We had an inflatable queen sized mattress with a wool blanket on it, with this bag on top. I was the perfect temperature all night. There is a ton of room. My husband is 6' tall and I am 5'10". We had loads of bag at the top and bottom. The width was very generous too. There was a lot of overhang in all directions over the mattress. There are zippers on either side so it's easy to get in and out, and they seem to be very durable. I didn't have any trouble with fabric getting caught in the zippers either (also a pet peeve). There is a fabric lip along the inside at the top with a drawstring so you can cinch it in around the neck if you need to keep the warmth in. The only problem with this bag is the stuff sack. It is NEVER going to get back in there. We have big cotton drawstring bags for storing sleeping bags - bought from MEC. (in Canada) I imagine REI has something similar....

Canada on Aug 12, 2017

BeatJunkieBeatJunkie: 2020 Updated Review -
We've been using this bag since 2017. We have not had one problem with this bag. We haven't had any rips, tears or broken zippers. It's still like beans new. This bag is VERY warm which is great for camping in the Sierra's or anywhere it gets cold. We haven't had any issues with trying to stay warm since we bought this bag. I sure wish we'd bought it years ago. I do take a sheet when we camp at lower elevations and the temperatures are warm or hot. We unzip the bag and just use the sheet as a cover. When my husband doesn't go camping I get one of my adult daughter's or a grandchild to help me put it back in the sack. I'm a pro at it now. It's really not that hard once you know how to do it. Just watch and follow the video that the manufacturer put out.

ORIGINAL REVIEW-
I read what seemed like a thousand reviews for every sleeping bag under the sun. I really wanted a sleeping bag that both my husband and I could sleep in together... one that would actually keep us warm on camping trips. We've spent many a freezing night huddled up trying to stay warm... The reviews for this bag led me to believe this could be the perfect bag.

When we went...

United States on Jul 27, 2017