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- USA
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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20
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Description
Therm-a-Rest Hyperion 32F/0C UL Sleeping Bag RegularThe ultralight Hyperion provides peak performance for uncompromising adventurers. The Hyperion 32F 0C sleeping bag is among the lightest in its class while still providing high performance during backcountry pursuits. The bag uses thermally efficient box baffled construction in key areas to ensure warmth and comfort in an ultralight package. Designed with high quality materials and Therm a Rest performance features, the Hyperion keeps your pack
The ultralight Hyperion provides peak performance for uncompromising adventurers.
The Hyperion 32F/0C sleeping bag is among the lightest in its class while still providing high-performance during backcountry pursuits. The bag uses thermally-efficient box baffled construction in key areas to ensure warmth and comfort in an ultralight package. Designed with high-quality materials and Therm-a-Rest performance features, the Hyperion keeps your pack featherweight without sacrificing an ounce of performance. Storage sack and compression stuff sack included.
Details
- Ultralight: One of the lightest pieces in its class, the Hyperion sets a new standard for high-performance outdoor equipment.
- 900-fill Nikwax Hydrophobic Down™ : Stays drier and maintains loft 60 times longer than untreated down.
- Unrivaled Packability: Lightweight materials and precise design allow for a smaller packed size than ever before.
- Box Baffled Construction: Uses mesh walls to maximize loft and minimize cold spots in key areas.
- Comfort Fit: Ergonomic shape and longer zipper provide a more human-friendly fit than other ultralight bags.
- SynergyLink™ Connectors: Integrate the bag with a mattress for optimal efficiency and comfort; removable for versatility.
- Zoned Insulation: Maximizes warmth and saves weight by intentionally placing fill where you need it most, 70% on the top and sides with 30% on the back.
- Responsible Down Standard Certified: Certification that ensures that the waterfowl in the down supply chain are treated humanely.
Tech Specs
| Small | Regular | Long | |
|---|---|---|---|
| Color | Black Forest | Black Forest | Black Forest |
| Weight (Standard) | 15 oz | 1 lb | 1 lbs 2 oz |
| Weight (Metric) | 0.44 kg | 0.46 kg | 0.52 kg |
| Width (Standard) | 27.5 in | 28.5 in | 29 in |
| Width (Metric) | 70 cm | 72 cm | 74 cm |
| Length (Standard) | 73 in | 80 in | 85 in |
| Length (Metric) | 185 cm | 203 cm | 216 cm |
| Height (Standard) | 4 in | 4 in | 4 in |
| Fits (Standard) | 66 in | 72 in | 78 in |
| Fits (Metric) | 168 cm | 183 cm | 198 cm |
| Girth, Shoulder (Standard) | 55 in | 57 in | 58 in |
| Girth, Shoulder (Metric) | 140 cm | 145 cm | 147 cm |
| Girth, Hip (Standard) | 48.5 in | 49.5 in | 51 in |
| Girth, Hip (Metric) | 123 cm | 126 cm | 130 cm |
| Girth, Foot box (Standard) | 40 in | 43 in | 46 in |
| Girth, Foot box (Metric) | 102 cm | 109 cm | 117 cm |
| Packed dimension (Standard) | 5.5 x 6 in | 5.5 x 6 in | 5.5 x 6 in |
| Packed dimension (Metric) | 14 x 15 cm | 14 x 15 cm | 14 x 15 cm |
| EN Comfort (C) | 5 C | 5 C | 5 C |
| EN Comfort (F) | 41 F | 41 F | 41 F |
| EN Limit (C) | 0 C | 0 C | 0 C |
| EN Limit (F) | 32 F | 32 F | 32 F |
| EN Extreme (F) | 5 F | 5 F | 5 F |
| EN Extreme (C) | -15 C | -15 C | -15 C |
| Fill material | 900 Fill Goose Nikwax Hydrophobic Down RDS | 900 Fill Goose Nikwax Hydrophobic Down RDS | 900 Fill Goose Nikwax Hydrophobic Down RDS |
| Fill weight (Standard) | 7.5 oz | 8.5 oz | 10 oz |
| Fill weight (Metric) | 0.22 kg | 0.25 kg | 0.29 kg |
| Shell fabric | 10D Nylon RipStop w/ DWR | 10D Nylon RipStop w/ DWR | 10D Nylon RipStop w/ DWR |
| Lining fabric | 10D Nylon RipStop | 10D Nylon RipStop | 10D Nylon RipStop |
| Zipper side | Left | Left | Left |
| Country of Origin | China | China | China |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 1118 reviews
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Product Reviews
★★★★★ 5
Very comfortable Slippers. Great buy!
Size: 12-13 Women/10.5-11.5 Men, Color: Charcoal
I bought these to replace a pair of slippers that I have had for years that are very similar to the slippers I bought, but I had worn a hole in the leather on mine, so I had to find something new and similar. These slippers are worth the money they are very comfortable, and I am sure they will last for years. They are a little tight around the ankle cuff but they are still new and I am sure they will wear in a little more when I start wearing them more.
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Reviewed in the United States on March 8, 2025
★★★★★ 3
Great slippers but disappointing quality.
Size: 7.5-8.5 Women/6-7 Men, Color: Ash, Size: 7.5-8.5 Women/6-7 Men, Color: Ash
Extremely comfortable, attractive slippers but the stitching came loose on both leather trim areas almost immediately. I tried to sew/glue down the stitching (as seen in photo) but it kept unraveling. Disappointing as these slippers are great in every other way (though they do run a bit big...I wear a 9 but ended up with a 7.5-8.5 which fits with a bit of room to spare even with thick socks). I just hope they hold up after my latest attempt to stop the thread from pulling out any more as I do really love wearing them.
Perhaps I just got a bum pair?
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Reviewed in the United States on April 3, 2024
★★★★★ 5
Quality and comfort
Size: 10.5-11.5 Women/9-10 Men, Color: Black
Comfortable and fit well. I got these to replace a very old pair that finally wore out! Warmth is medium (I wear puffer booties for when it's really cold). Quality on these is great!
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Reviewed in the United States on March 9, 2026
★★★★★ 5
Can't go wrong with Acorn for as long as they last!
Size: 12-13 Women/10.5-11.5 Men, Color: Charcoal
Acorn is just a great company all around. I had bought my husband these slippers over 20 years ago. They are still in great shape although the sole has worn in some places. But nothing's coming apart! However, I decided to replace them for him. His foot is 10.5 and they are a little hard to get on right away-of course, after over 20 years of having "worn in" the original pair, anything would feel tight. So I'm not holding this against them. They will relax with use. The only difference is that the original sole was black and these are tan. I think I would prefer the black, but since it's only being worn in the house, no big deal.
My husband has really cold feet and these slippers never fail to warm his feet right up! He said they feel really soft to walk in and like the cushioning. They're not too heavy and fit him great! I have Acorn slippers myself that I've worn every single day in the house and outside to the mailbox too. They last.
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Reviewed in the United States on April 11, 2026
★★★★★ 4
Very warm.
Size: 13.5-14.5 Women/12-13 Men, Color: Navy Blue
Very warm and comfortable. A little difficult to put on with the collared top.
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Reviewed in the United States on January 19, 2026
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