Thermodown 15 Sleeping Bag

Regular price $ 159.99

Starting at $53/mo with Shop Pay Installments.

Stay warm and comfortable in our outstanding Thermodown 15 down backpacking sleeping bag. It's perfect for 3-season camping or backpacking, while being lightweight and compact enough to find a spot in your pack.

Only 43 items in stock!
Free Shipping on US Orders | Lifetime Warranty | 60-Day Returns and Exchanges

Product Description

Stay warm and comfortable, no matter the weather, in our outstanding Thermodown 15 down sleeping bag. With excellent materials and performance, your search for a great sleeping bag ends here! 

Superior Insulation

Cold weather is no match for the 28 oz. of 600-fill power down insulation stuffed into every corner of this bag. You will stay toasty warm down to 15F (-10C). However, the added warmth does not compromise on size and weight. The bag packs down to just 11 x 7 inches and comes in at only 2 lb. 14 oz.


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.

For complete waterproof protection, consider our 12L version of our ultralight waterproof stuff sacks (sold separately).

Specs and Sizing

Short Size

  • Size: 74 inches by 31 inches, comfortably fits adults up to 5'6"
  • Weight: 2 pounds 12 ounces
  • Fill Weight: 26 ounces

Regular Size

  • Size: 80 inches by 31 inches, comfortably fits adults up to 6'0"
  • Weight: 2 pounds 14 ounces
  • Fill Weight: 28 ounces

Long Size

  • Size (Long): 86 inches by 33 inches, comfortably fits adults up to 6'6"
  • Weight (Long): 2 pounds 15 ounce
  • Fill Weight (Long): 28 ounces

Other Specifications

  • Packed Size: 11 inches long by 7 inches in diameter
  • Insulation Material: 600 fill-power 80/20 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 15 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, Australia, and New Zealand. We also ship to select European countries that include the following; UK, Germany, Denmark, the Netherlands, Switzerland, France, Sweden, Finland, Poland and Ireland.

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

Most international deliveries are made within 4-6 business days, although more remote locations can take a couple of extra days. All international shipments are fully tracked from door-to-door.

If your destination is not listed above, we apologize that we're not able to accommodate direct shipments to you. However, some of our customers have successfully used 3rd party international parcel 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.

Customer Reviews

Based on 87 reviews
Ryan (Sacramento, CA, US)
It's good but be careful

I recently got to really test this bag out in a week long trip in Yosemite in late October. I expected temps at night to be anywhere from 20° F down to 6° F. I figured this bag, coupled with a polyester liner would do the trick. In some ways, I was right considering that I am still alive but in some ways I wish I had the extra warmth of the 0° bag. This bag performs very well at temps between 30° and 20° but the moment it goes below that, you can absolutely feel it. I think the best application for this bag would be anyone who wants to use it in the fall/early spring at none alpine elevations.

The features of this bag work really great like the draft collar, draw string hood and I always noticed that the footbox remained quite warm when the rest of my body was quite cold.

My biggest gripe is that the stitching on the stuff sack seems to be prety fragile and I can already see parts of it coming loose. Luckily, that is not really a super expensive piece to replce.

Overall, if you want a decent bag at a great price for moderate level of backpacking in the shoulder seasons, this bag is great. If you want to take it to high altitudes and test it's limits, you might want to look at something else.

Jean D.
So Comfortable

I purchased this bag for my recent trip to Zion. It was unbelievably comfortable and warm. I have never slept so good camping. Before I got this bag, I thought my sleeping pad was sub par (I always woke up sore, cold, and uncomfortable), but it was really my old bag. The combination of this sleeping bag and my pad provided me with comfort all night. Couldn't be happier with my purchase.

Julio Moscoso (Fort Lauderdale, FL, US)

Got a chance to test it in 40deg temps. Worked well and I was comfortable. But for lower temps would probably need more layers...

Rob M
Great bag

Bought the 15 degree bag a few weeks ago. Great customer service and the bag was here in two days. Haven't had a chance to camp with it but an opportunity came up when the wife was complaining about my snoring so I decided to set up the tent in the backyard and sleep outside. So while it wasn't very cold (about 39F) the bag worked great. Very roomy (I'm 6-00 and I bought the long). Super warm and I liked the draft collar. I'm a fan.

Matthew Oldham (Kansas City, MO, US)
Thermo down 15° bag

This is my first down bag.
Materials and quality seem very good. The bag is lighter and more compact than anything I’ve used before.
I am 5’9” 165lb the bag was plenty roomy for my frame.

On my recent trip to the Colorado Rockies, the temperatures reached lows around upper 40°’s. I had to leave the bag open because it was too warm.
The one night that the temperature dropped below freezing (dog water froze) I was very happy to have such a warm sleeping bag. I was very comfortable in this bag below freezing.
The only minor issue was with the zipper. Material would get caught up in the zipper if you were not careful.

Why Purchase from Paria Outdoor Products?

Why choose Paria?

We Share Your Love of the Backcountry

We believe that everyone should experience the outdoors. To that end, we make high-quality gear that you can trust, at a price that everyone can afford. Come join us on the trail!