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Ultima Thule › Mummy Style Sleeping Bag

$250.00 (You save $60.00)
Temperature Rating:
-20º F / -60º F (FTRSS)
Compression Stuff Sack & Pillow:
5 lbs.

 Warranty Information

Your Wiggy's bag is guaranteed for a lifetime of use. If a seam opens, the zipper breaks or the Lamilite insulation deteriorates (such as losing its loft or separating, clumping in one place or another), Wiggy’s will repair or replace your bag at no charge to you.

 Product Description

The Ultima Thule is a -20º F (-30º C) rated mummy style bag. It is available in our four standard sizes, though I recommend the wide width due to the fact that there is double the insulation on the top half of the bag.

When the Overbag is added to the Ultima Thule, the temperature rating becomes -60º F or C. When both bags are combined, you have the Ultima Thule FTRSS.


Product Testimonials

  1. awesome sleeping bag...

    I bought this bag with the intention on using it on the Appalachian Trail. I was on the Trail March2nd, 2018 and this bag was a life saver. Granted it’s a heavy bag and that is something I was ok with. We had 40mph winds and temperatures below 20 degrees. Before the wind chill was included.

    I saw so many hikers beyond cold. Not me...I stayed toasty warm. I’m not a tall guy at 5’10” and weigh about 260 lbs. I was doing a night hike where it was so cold the water bottles froze. I was close to hypothermia from all the sweating I did and this bag saved my bacon. Best bag I’ve ever had.

  2. great bag

    I have had this bag over 2 years and sleep in it often. Well made, super warm, have yet to need the over bag (already purchased) during my overnights in the PNW. I use the overbag for summer nights. Saving money for the Ducksback products and the freedom shelter.

Our Locations  +  Contact

Corporate Office & Factory

To place an order, please contact our corporate office & factory at:

Wiggy’s Inc.
PO Box 2124
Grand Junction, CO 81502
+1 (866) 411-6465 f:  (970) 241•5921 e:  

Retail Stores


2482 Industrial Blvd  •  Grand Junction, CO
(970) 241-6465


8225 Old Seward Hwy, Ste A  •  Anchorage, AK
(907) 336-1330

When it comes to extreme cold weather gear, Wiggy's has you covered.

Check out all our products from sleeping bags & shelters to footwear & clothing. Our uniquely developed continuous filament fiber called Lamilite insulation is what sets Wiggy brand insulated products apart. What is Lamilite and why does it perform better than all other forms of insulation? Click here to keep reading & find out more »

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