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Therm-a-Rest Hyperion 20 UL Sleeping Bag - Moosejaw
 
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Therm-a-Rest Hyperion 20 UL Sleeping Bag
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Therm-a-Rest Hyperion 20 UL Sleeping Bag

Therm-a-Rest Hyperion 20 UL Sleeping Bag is rated 4.4 out of 5 by 38.
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4.4 Star Rating
4.4
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The Therm-a-Rest Hyperion 20 UL Sleeping Bag is an ultralight mummy bag designed for backpacking and mountaineering. Compressible down insulation and a tapered mummy shape team up to keep weight and packed size to a minimum. The high-quality 900-fill goose down features hydrophobic Nikwax™ treatment for improved performance in wet or humid environments. Removable sleeping pad straps allow you to integrate your sleep system to boost comfort and thermal efficiency. Boasting a 20°F temperature rating and weighing in at only 20oz for the regular size, this sleeping bag will keep you toasty warm through most 3-season applications without weighing you down.

Product Description
Item No.   10402460

The Therm-a-Rest Hyperion 20 UL Sleeping Bag is an ultralight mummy bag designed for backpacking and mountaineering. Compressible down insulation and a tapered mummy shape team up to keep weight and packed size to a minimum. The high-quality 900-fill goose down features hydrophobic Nikwax™ treatment for improved performance in wet or humid environments. Removable sleeping pad straps allow you to integrate your sleep system to boost comfort and thermal efficiency. Boasting a 20°F temperature rating and weighing in at only 20oz for the regular size, this sleeping bag will keep you toasty warm through most 3-season applications without weighing you down.

Down Insulation

FEATURES of the Therm-a-Rest Hyperion 20 UL Sleeping Bag

  • Ultralight design and construction gives the regular size a weight of 20 ounces
  • 900 fill Nikwax Hydrophobic Down™ stays dry and retains loft up to 60 times longer than untreated down
  • Down also absorbs 90% less water and dries three times faster without using dangerous PFCs
  • Lightweight materials and precise design allow for a smaller packed size than ever before for incredible packability
  • Box baffled construction uses mesh walls to maximize loft and minimize cold spots
  • SynergyLink™ connectors integrate the bag with a mattress for optimal efficiency and comfort, and are also removable for versatility
  • ThermaCapture™ lining to trap radiant body heat and retain warmth without adding bulk or weight
  • Zoned insulation maximizes warmth and saves weight by intentionally placing fill where you need it most
  • Also features a heat-trapping draft collar, zipper draft tube, snag-free zipper, and cinchable hood
  • Offers an extreme temperature rating of 20°F / -6°C
  • A compression sack and storage sack are included

Fabric Details

  • Shell: 10D Nylon RipStop with DWR
  • Lining: 10D Nylon RipStop ThermaCapture™
  • Fill: 900 Fill Goose Nikwax Hydrophobic Down™

Product Specifications
Compressed Bag Size: 3 Liters
Features: Draft Collar, Ultralight
Shell Fabric: 10D Nylon RipStop w/ DWR
Bag Weight (Short): 1 lb 3 oz
Bag Weight (Regular): 20 oz.
Bag Weight (Long): 22 oz
Extreme Temperature Rating: -9 Degrees Fahrenheit
Sleeping Bag Lining: 10D Ripstop Nylon
Shoulder Circumference (Short): 55 in.
Max User Height (Short): 5 ft 6 in.
Max User Height (Long): 6 ft 6 in.
Hip Circumference (Short): 49.5 in.
Foot Circumference (Short): 40 in.
Foot Circumference (Regular): 43 in.
Foot Circumference (Long): 46 in.
Shoulder Circumference (Regular): 57 in.
Hip Circumference (Regular): 49.5 in.
Shoulder Circumference (Long): 58 in.
Hip Circumference (Long): 51 in.
Ultralight: Yes
Disclaimer: We only ship this brand to US Addresses.
Gender: Mens
Best Use: Ultralight Backpacking, Backpacking
Insulation: Down
Temperature Rating: 11 - 20 Degrees Fahrenheit
Exact Temperature Rating: 20 Degrees Fahrenheit
Sleeping Bag Shape: Mummy
Max User Height (Regular): 6 ft
Fill Details: 900 Fill Power Goose Down
Product Reviews
Rated 1 out of 5 by from Very cold Calling it - 6 is a joke. Used it down to temperatures just above 0 and even with baselayer, slacks, two sweaters, socks, beanie, gloves and a silk liner i kept waking up being to cold. Used it in a msr hubba hubba with a thermarest neoair. I would rate it a +5 bag. Only good for summer. So much money wasted here since i need a 3 season bag and now have to buy another one since thermarest lie about there temperatur ratings.
Date published: 2022-06-05
Rated 5 out of 5 by from Incredible bag for backpacking I just recently got this sleeping bag but I am already impressed by it. It packs down INCREDIBLY small, at least half the size of my previous sleeping bag, and still provides great warmth. It is still spring (with 3 feet of snow on the ground) so I haven't tested it yet in mild conditions but have spent a few nights that went down to -5C and it was plenty warm enough! We are planning to purchase the same bag for my partner given the size and weight savings it will bring us. I can't wait to continue using this throughout the upcoming season!
Date published: 2022-04-17
Rated 5 out of 5 by from Crazy Light! The best feature about this bag is how unbelievably light and compact it is. The fabric is super thin though so you can't be rough with it.
Date published: 2022-04-11
Rated 5 out of 5 by from Perfect length, Extremely packable and Perfect length, Extremely packable and light. All around very solid minimalist bag.
Date published: 2021-12-04
Rated 4 out of 5 by from Almost perfect 6'0",180. I really wish I could have given 4.5 stars, but alas....I've used this bag for two summers now. Put about 800 miles on it. In order to get the insane lightweight it is understood there will be a couple of compromises... fits snug, just enough insulation, short zipper. This bag packs down extremely small. I sleep pretty warm and though other 20° bags might be warmer this one actually works at 20°, but not much lower. The only complaint I have is that the zipper is just a little short. Another 6 in would make all the difference. With the zipper as is, it is more difficult to use as a quilt (in warmer temps).
Date published: 2021-11-15
Rated 4 out of 5 by from side sleeper I bought a Hyke and Bike bag and left it stored for about a year without using it, and it didn't loft correctly. As a result, i was cold and sleep deprived. After learning from that experience, i purchased Hyperion. Overall the Hyperion preformed as advertised. Being a side sleeper i could feel cold air in the bag due to high wind gusts, because the density of the insulation isn't the same at the interface of the sleeping pad. Areas of improvement would be better instructions for washing it without it losing its ability to loft, so it can be repeatedly washed on multi week thru hikes.
Date published: 2021-10-30
Rated 5 out of 5 by from Nice and Compact Super cozy, warm and durable sleeping bag! Can't wait to test it during the winter time. The zipper is a little fussy but this is not a big deal.
Date published: 2021-08-26
Rated 5 out of 5 by from Good prices and easy returns All of the stuff I ordered came quick and correct. Except my miss click on the sleeping bag I ordered. The return was so easy and my account was credited quick. I will be buying more from this site.
Date published: 2021-07-20
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How small can it compress to in liters and/or inches?

Asked by: Kate
Great question! The compressed volume is the size of a Nalgene bottle, approximately 3 liters.
Answered by: Foxxy Cleopatra
Date published: 2021-05-09

Do you have choice of left or right sided zippers? (My husband and I like to zip our bags together)

Asked by: Babs
Hi Babs, thanks for the question! Sadly this bag is only made in a left-zip option at this time and cannot be zipped together. Sorry about that but I hope this helps!
Answered by: Marty Moose
Date published: 2021-04-11
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