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Last updated January 1st, 2020
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The Therm-a-Rest Hyperion 32 UL Sleeping Bag is a summer sleeping bag for ultralight backpacking. Snuggle up with 900 fill Nikwax Hydrophobic Down™ wrapped around you for warmth. The treated down resists moisture and dries faster, just in case the weather is wet or there is trouble at a creek crossing. Featuring SynergyLink™ Connectors for mattress integration, so you won't go rolling off in the night.
Products on Sale are Discontinued Styles or Colors.
The Therm-a-Rest Hyperion 32 UL Sleeping Bag is a summer sleeping bag for ultralight backpacking. Snuggle up with 900 fill Nikwax Hydrophobic Down™ wrapped around you for warmth. The treated down resists moisture and dries faster, just in case the weather is wet or there is trouble at a creek crossing. Featuring SynergyLink™ Connectors for mattress integration, so you won't go rolling off in the night.
Products on Sale are Discontinued Styles or Colors.
FEATURES of the Therm-a-Rest Hyperion 32 UL Sleeping Bag
Ultralight design and construction gives the regular size a weight of 16 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 32°F / 0°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
Features:
Draft Collar, Ultralight
Shell Fabric:
10D Nylon RipStop w/ DWR
Bag Weight (Short):
15 oz
Bag Weight (Regular):
16 oz
Bag Weight (Long):
18oz
Extreme Temperature Rating:
5 Degrees Fahrenheit
Sleeping Bag Lining:
10D Ripstop Nylon
Shoulder Circumference (Short):
55 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:
31 - 40 Degrees Fahrenheit
Exact Temperature Rating:
32 Degrees Fahrenheit
Sleeping Bag Shape:
Mummy
Max User Height (Regular):
6 ft
Fill Details:
900 Fill Power Goose Down
Product Reviews
Rated 5 out of
5 by
gerbren from
Really capableI have only tried a handful of sleeping bags as i'm pretty much a rookie hiker. However i am absolutely amazed by how this bag performs. I can compress it to the size of a football! thisi is reallt usefull to me when i go bike packing, when pack size is important. I always use a small liner, but i have never had any chills in this bag. even at around 0 degrees celcius. some people mention it is is chilly, but it seems most of those people are using the uber lite, or some similar sleeping mat.
end of the day im super impressed with its weight to warmth ratio and it has yet to let me down!
Date published: 2022-06-29
Rated 3 out of
5 by
Anonymous from
Extremely lightUsed this and their neoair uberlite on a recent camping trip north of Milwaukee WI along Lake Michigan; these did not provide the advertised comfort. All their gear packs down extremely light and was comfortable but did not provide warmth or comfort on a 35 degree night. Packed up and drove home at 3am. If this was labeled as 45 degree bag I'd agree with it more but given it's cost I wouldn't recommend it.
Date published: 2021-04-22
Rated 5 out of
5 by
Camille from
Great lightweight bagThis bag is super lightweight, very cozy, and has an attractive color. I'm glad I chose this bag for my 3 season, lightweight backpacking adventures.
Date published: 2021-03-23
Rated 4 out of
5 by
Old M. from
Great weight saving bagI go to the Golden Trout Wilderness about 4 trips per year. This bag is perfect for summer trips, but I need to use a liner for early spring and fall.
Date published: 2021-02-21
Rated 4 out of
5 by
LeafChen from
Great BagsI bought this a month ago and love it very much. It's really light and comfy and really small in bag. I use it twice when i go hiking in Taiwan's mountain height is 3000 meter and it work well. It can keeping me warm and comfortable at a 40F night, and i think this is the extreme temperature. Maybe Therm-a-Rest is famous with its sleeping pads, but i think the sleeping bags is also good.
Date published: 2021-01-03
Rated 3 out of
5 by
WoundHealer from
I wouldn't purchase this againThe Hyperion 32 is an excellent bag. The construction is superior but there is a design flaw. It's weight can't be beat. I gave the bag three stars because of the zipper and draft tube placement. It is clear that the bag is made for those who sleep on their backs. As for reality that doesn't happen. I tend to move and the only way I could be fully comfortable, and not get a cold spot along the zipper, was to stuff my down jacket along the zipper. I didn't have any issues with the right side of the bag so it wasn't the strategically placed down. The draft tube is on the top. Cold goes down. So it's placement, on the top of the zipper, I feel, is a design flaw. But I'm still thinking that wouldn't make a difference and a different zipper would. I know for sure it was the zipper because it felt cold and the bag did not. The coldest it got was 35° and that was only one night as the other nights, 5, were 40-45° I do not consider this a 32° bag when I get a draft at 42° and I run hot so I love cold weather. I would rather use my Cat's Meow from 1996. That is a 30° bag with primaloft and is good at 30°. It's the only bag I've had that's rated for 30° that isn't freezing at it's temp rating. Yes, I know bags are rated differently now. The only reason I wanted this bag is because I can drop a pound.
Date published: 2020-09-02
Rated 3 out of
5 by
Anonymous from
I wouldn't purchase this againThe Hyperion 32 is an excellent bag. The construction is superior but there is a design flaw. It's weight can't be beat. I gave the bag three stars because of the zipper and draft tube placement. It is clear that the bag is made for those who sleep on their backs. As for reality that doesn't happen. I tend to move and the only way I could be fully comfortable, and not get a cold spot along the zipper, was to stuff my down jacket along the zipper. I didn't have any issues with the right side of the bag so it wasn't the strategically placed down. The draft tube is on the top. Cold goes down. So it's placement, on the top of the zipper, I feel, is a design flaw. But I'm still thinking that wouldn't make a difference and a different zipper would. I know for sure it was the zipper because it felt cold and the bag did not. The coldest it got was 35° and that was only one night as the other nights, 5, were 40-45° I do not consider this a 32° bag when I get a draft at 42° and I run hot so I love cold weather. I would rather use my Cat's Meow from 1996. That is a 30° bag with primaloft and is good at 30°. It's the only bag I've had that's rated for 30° that isn't freezing at it's temp rating. Yes, I know bags are rated differently now. The only reason I wanted this bag is because I can drop a pound.
Date published: 2020-09-02
Rated 3 out of
5 by
Reedrunner from
COLD at 45FI love the size and weight of this sleeping bag. However, it fails at its primary job, keeping me warm at night. Even a 45F night in August and my shoulder gets cold if I sleep on my side. The bag simply does not have enough insulation. As small, lean person I do tend to sleep cold, but my 20F bag from another company easily keeps me toasty down to 20F. The Hyperion 32F isn't even warm to its stated comfort range of 41F. Minor drawbacks that I would put up with for the weight and size are the 2/3rds length zipper and the face cinch system.