Thermarest Corus 32 Down Quilt

0°C Comfort Limit (EN13537:2012), 339g of 650 Fill Power Down (US Method)
Weighs 588g (Regular bag)
Code: SS20536V
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Lightweight, comfortable and warm top-rated camp quilt that is extremely packable for your camping and backpacking adventures. The Corus provides the perfect blend of functionality and warmth. 

Thermarest says:

The versatile Corus™ Quilt offers essential comfort wherever you use it. Its perfect balance of functionality and warmth make it ideal for three-season backcountry adventures or for layering in colder conditions. Made with high loft, packable Nikwax Hydrophobic Down and Box Baffled construction for retaining heat and excellent temperature regulation, the Corus offers a surprisingly liberating feeling of unrestricted movement throughout the night. The footbox can slip over your pad to eliminate drafts or over your feet for extra warmth.

The Therm-a-Rest's 2020 Corus 32 Down Quilt, is ideal for those seeking ultralight performance and amazing comfort without a weight penalty. It features a good amount of 650 fill of responsibly sourced Nikwax Hydrophobic down which results in a 0°C Comfort Limit and vastly improves its performance in damp conditions. The impressive box wall construction for the baffles is something you only get on top quality down products as this technical aspect allows down to loft much more effectively while also reducing heat loss through cold spots along stitch lines. 

The spacious footbox fits round the bottom end of your sleeping mat keeping your feet warm and the quilt in place. It also includes poppered snap loops so it can easily be connected to a Thermarest mattress, quilt blanket or sheet allowing you to build a your own sleep system. There is a small pocket at the head end for those essentials you might need to find in a hurry such as a head torch. As you would expect it the pack size is tiny. If you're after a little bit of light-weight luxury on your next adventure then this quilt would be ideal.

- Reviewed by Ultralight Outdoor Gear

Help and advice: Choosing a sleeping bag advice
  EN 13537 rating for sleeping bags explained
  Sleeping bag shape and sizes advice
  Sleeping Bag features Page 1
  Sleepin bag features page 2
  All about down filling in sleeping bags
  • 650 Fill Nikwax® Hydrophobic Down™: Absorbs 90% less water and dries 3 times faster without using dangerous PFCs.
  • Compact: Designed to easily fit into your pack.
  • Box Baffled Construction: Uses mesh walls to maximize down loft and minimize cold spots.
  • SynergyLink™ Connectors: Integrate the quilt with a pad for optimal efficiency and comfort; removable for versatility.
  • Thoughtful Footbox: Precisely shaped footbox can slip over your pad to eliminate drafts or over your feet for extra warmth.
  • Draft Protection: Full-perimeter side baffles and snap neck closure keep out unwanted drafts.
  • Build a System: Pair with another Therm-a-Rest quilt, sleeping bag, blanket or sheet to build a layered system.
  • Responsible Down Standard Certified: Certification that ensures that the waterfowl in the down supply chain are treated humanely.
  • Stuff sack and storage sack included

Temperature Rating

  • EN13537:2012 Comfort: 5°C / 41°F
  • EN13537:2012 Comfort Limit: 0°C / 32°F


  • Weight: 588g (excludes bags)
  • Fits: 183cm / 6ft
  • Shoulder girth: 126cm / 49.5in
  • Hip girth: 121cm / 47.5in
  • Footbox girth: 64cm / 25in
  • Fill weight: 339g
  • Packed dimensions: 17 x 25cm / 6.5 x 10in


  • Weight: 638g (excludes bags)
  • Fits: 198cm / 6ft 6in
  • Shoulder girth: 135cm / 53in
  • Hip girth: 131cm / 51.5in
  • Footbox girth: 76cm / 30in
  • Fill weight: 370g
  • Packed dimensions: 17 x 25cm / 6.5 x 10in


  • Shell: 20D Polyester RipStop w/ DWR
  • Lining: 20D Polyester Taffeta
  • Insulation: 650 Fill Nikwax Hydrophobic Down RDS
Showing 2 of our total 3 reviews, with an average rating of 4 stars. Read all 3 reviews for Thermarest Corus 32 Down Quilt.
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Review Summary - 4 out of 5 based on 3 ratings.
July 28, 2021 | robert phillips
First quilt experience

Comfortable and easy to use I much preferred it to a sleeping bag. Toe box over a 2.5cm Thermarest mat worked well. I am a light sleeper and move around a lot and this worked much better than getting twisted up in a bag. First night it took a bit of getting used to but second night I was really comfortable. I don't miss the hood section at all as I found with a bag I would sleep in a balaclava on cold nights as I didn't like the enclosed feeling around my head so this works well. No more sleeping bags for me. 4 stars as I am concerned about the long term durability of the poppers and straps and I do wonder [as with sleeping bags] about the temperature rating.

Ultralight Outdoor Gear Limited
June 25, 2021 | Steve
Good value lightweight quilt

I bought this to use on the West Highland Way and it didn’t disappoint, scrunched down into the bottom of my bag to pop out like a genie every evening, I used it with a NeoAir Xlite regular size and with the clips they fit together perfectly. The clips can be a little fiddly but overall are okay. I would agree with the review from Stephen that I tested this out and found that at 3 to 4°C you could start to notice the cold, but as a general lightweight quilt this is very good and to start saving more weight you need to spend a lot more money. I only didn’t give it 5 stars due to the 3/4°C issue and fiddly clips but otherwise it worked perfect for me on the WHW in June.

Ultralight Outdoor Gear Limited