Thermodown 0 Sleeping Bag

Regular price $ 179.99

Starting at $59/mo with Shop Pay Installments.

43 reviews

Cold weather is no match for our 4-season Thermodown 0 down backpacking sleeping bag! Each bag lofts to almost 6 inches to keep you toasty warm during those freezing nights in the backcountry.

Anticipated Restock Date: mid-June


Product Description

Stay warm and comfortable, no matter the season, in our outstanding Thermodown 0 down sleeping bag. With excellent materials and performance, your search for a great four-season sleeping bag ends here! 

Superior Insulation

Cold weather is no match for the 32 oz. of 700-fill power down insulation stuffed into every corner of this bag. You will stay toasty warm down to 0F (-17C). However, the added warmth does not compromise on size and weight. The bag packs down to just 11 x 8 inches and comes in at only 3 lb.


We've done our best to make this a great bag.

  • On warm nights, easily shed heat with the large two-way YKK zipper which opens from top and bottom. 
  • To prevent annoying snags, we've incorporated a wide zipper guard. 
  • To keep the heat in, a large draft collar automatically wraps around your neck. No need to deal with cumbersome drawstrings or scratchy velcro. The fully insulated and contoured hood can also be completely cinched down. 
  • A roomy trapezoidal foot box with extra insulation will keep your toes nice and warm. 


The bag comes with a durable compression sack allowing you to easily fit the bag into your pack. Between adventures, use the included mesh storage bag or hanging loops to properly store the bag.

Specs and Sizing

Short Size

  • Size: 76 inches by 31 inches, comfortably fits adults up to 5'6"
  • Weight: 2 pounds 14 ounces
  • Fill Weight: 30 ounces

Regular Size

  • Size: 80 inches by 31 inches, comfortably fits adults up to 6'0"
  • Weight: 3 pounds
  • Fill Weight: 32 ounces

Long Size

  • Size: 86 inches by 33 inches, comfortably fits adults up to 6'6"
  • Weight: 3 pounds 2 ounces
  • Fill Weight: 33 ounces

Other Specifications

  • Packed Size: 11 inches long by 8 inches in diameter
  • Insulation: 700 fill-power 90/10 white duck down
  • Shell Material: lightweight and durable 20D ripstop nylon
  • Interior Lining: breathable 320T polyester pongee

How do I care for my new down sleeping bag?

  1. When you first receive the bag, run it in the dryer at the low-temperature or air fluff setting for about 10 minutes to loosen up the down that has been compressed during the shipping process.
  2. When heading out on the trail, use the included compression sack to protect the bag and also reduce the amount of space it takes up in your pack. Use care when stuffing the bag into the compression sack.
  3. Between trips, always store your bag using the included mesh storage sack or the hanging loops.
  4. Always wash your bag by hand or a front-load tumble washer. Never use a top load washer. Never use bleach.

For more detailed care instructions, including how to make repairs, please review our complete guide.

How do you determine the temperature rating?

We've put together an in-depth article on how we determine our temperature ratings. The guide also provides lots of helpful advice regarding making an informed decision.

How can I increase the temperature rating of my sleeping bag?

If you'd like to use our down bag at temperatures of 0 degrees and below, you may consider adding a sleeping bag liner to add about 10 degrees to the warmth rating. The Sea to Summit Thermolite Sleeping Bag Liner is a great option.

We offer two shipping services within the United States:

  • Free Standard Shipping = 5-7 Day Ground Shipping
  • Expedited Shipping = 2-4 Day Express Shipping

Do you ship outside of the United States?

Yes, we ship to all of Canada, Europe, Australia, New Zealand, and Japan.

All international orders are shipped Duties Paid. This means that all import taxes and duties are prepaid. No additional fees will be collected from the customer.

Canadian orders are shipped via a 7-10 day Economy Service. Orders to Europe, Australia, New Zealand, and Japan are shipped via a 10-15 day Economy Service. All international shipments are fully tracked from door-to-door.

If you're outside of our shipping area, we are not able to accommodate direct shipments to you. However, some of our customers have successfully used 3rd party international forwarding services.

What is your return/exchange policy?

We offer 60 days to accommodate any returns or exchanges of non-defective products. In some cases, we can accommodate returns and exchanges past 60 days, but these will be decided on a case-by-case basis. Any returns after 60 days will only be offered store credit.

What items are eligible for a return?

To be eligible for a return and refund, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

If you've purchased a tent or tarp and would like to set it up in your backyard, please do so on a dry, clear day to keep the tent/tarp as clean as possible. Pitch the tent/tarp on dry grass if possible and use other stakes if you have them available. This will keep the tent/tarp and stakes in an unused condition to facilitate a return.

If items sent back for a return/exchange show clear signs of use (excessive dirt, animal hair, etc.), the return/exchange will be rejected and the items will be shipped back.

Are shipping fees refundable?

Shipping costs are non-refundable. If you receive a refund, the initial cost of shipping your order (if any) will be deducted from your refund.

Is return shipping free?

No, the cost of return shipping will be subtracted from the refund amount. We will provide a prepaid return label for the return shipment. The cost of return shipping will be provided to you along with the prepaid return label. 

Please note that due to our shipping volume, we have access to significantly lower shipping rates than retail. As a result, the cost of the return shipping will be much lower, resulting in a higher refund.

How do I initiate a return/exchange?

To initiate a return/exchange, please email us at with the following information:

  • Your original order number
  • The items to be returned/exchanged
  • The reason for the return/exchange

Once your return/exchange request is received, we will provide a prepaid return shipping label along with the cost of return shipping. If you decide to proceed with the return, please use this label to send the items back to us. We will only accept returns that are shipped via the prepaid return label. This ensures that the shipment will be trackable and insured.

Once the returned items are delivered and inspected (please allow 1-2 weekdays for inspection), we will issue your refund or exchange.

When a refund is processed, a credit will automatically be applied to your original method of payment and you will receive an email notification. Please allow 2-5 business days for the credit to appear.

What about international returns?

If you are an international customer, the same 60 day return/exchange policy applies. To initiate an international return, please contact us at the email address above and provide the same order/item to be returned information. We will then coordinate with you on the return process, which will differ slightly depending on your exact location. The return instructions above only apply to US customers.

All of our products come with a limited lifetime warranty against manufacturer defects. If there is a problem with your gear due to manufacturing, we will replace it free of charge, no questions asked. If you have any concerns about your product, please contact us at:

When contacting us for a warranty claim, please include:

  • The specific product, including size or length
  • Your original order number
  • Your current shipping address

We pride ourselves on our courteous and responsive customer service. We'll do our best to make sure all of our customers are happy with their purchase.

Here’s what others think

Customer Reviews
4.8 Based on 43 Reviews
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Canada Canada

no complaints

Love the bag, great price. Only way they can make this perfect is if warranty is easy to deal with, but havent had a chance to test that out yet, and I hope i wont need to!

Nathan P.
United States United States

Love it

I own a number of Paria gear and I've always been impressed with the price and quality. I have the 15 degree and 0 degree down bags. They're both warm and pack light.

Paria Outdoor Products Thermodown 0 Sleeping Bag Review
Steven H.
United States United States

Accurate Zero Degree down bag

I used to have LLBean down bag but they seem to be putting less down in the bags the last ten years so it didn’t t keep me warm in Zero degrees. Everything else being equal, age, health and what you eat the evening before, Paria down 0 degree gave me the best bang for the buck and is actually accurate about it being a zero degree bag!

Cara W.
United States United States

Very Nice Bag!

I haven’t really had the chance to test this bag in very cold weather outside yet. I did use it in my camper in the desert and it was in the thirties at night and the bag kept me toasty warm, though I did have another bag opened and on top of me. My biggest complaint is in general mummy bags are difficult for side sleeping because the zipper always gets in the way. This of course is not the fault of the bag, I just wish they could design the zipper in the center of the bag not the side. Very nice bag for the price. I am 5’10 and about 150lbs

Lonnie H.
United States United States

ThermoDown 0 Mummy Sleeping Bag

I purchased the Thermodown 0 sleeping bag in early January 2023. Tested February 24. My primary use for this bag will be occasional backpacking from Spring to Fall. I ordered the “Regular” size. The weight being 3lbs is nice. I am 5’7” and the regular size fits very well. I want a sleeping bag that will keep me comfortably warm when the weather is colder than 33 degrees Fahrenheit. I tested this sleeping bag in my 2-person tent, set up in my yard. I was wearing Long Johns and socks, I did not have any problems with the zipper, other than me getting into a good position to be able to pull the zipper. I also liked that I could turn to my side without the bag rolling with me. The outside temperature was 19 degrees and 25 degrees inside the tent. I used a pad rated at R4.3. At the time of morning it was time for me to get up, the temperature was still at the lowest reading…. I was warm and comfortable and not too anxious to crawl out of the bag!

Paria Outdoor Products Thermodown 0 Sleeping Bag Review
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