Therm-a-Rest Hyperion 20
Summary
Price At Time Of Writing | $469.95
Our Overall Rating | 89 out of 100
Pros - High quality construction and fill, extremely lightweight
Cons - Expensive, not as warm as others, tight-fitting design
Overall - The best lightweight option for long hikes in warmer conditions
Technical Specifications
Packed Size - 8x6in
Weight - 1lb 4oz
Fill - 900-fill-power Nikwax Hydrophobic goose down
Our Analysis & Ratings
We thought the Therm-a-Rest Hyperion 20 was a very high-quality, well-made sleeping bag worthy of its price tag. It clearly uses high-quality materials and we couldn't find fault with its construction. However, it definitely wasn't the warmest we tried, nor the most comfortable due to its tight mummy shape. This is a bag specifically perfect for multi-day hikers who need to conserve space and weight, as it packs down to a ridiculously small and light package — just as long as they're not going anywhere temperatures get down to freezing point.
Comfort - The fit on this bag is snug, to say the least, with quite a tight mummy shape. It also wasn't as warm as some of the others we tested, which we did notice as we took them out in quite cold weather.
Construction - The construction is very high quality, using hydrophobic goose down and materials that are comfortable to the touch. The fill has been strategically placed more at the front and sides of the bag, which is a great weight saver but meant we had to lean on the quality of our sleeping mat to keep us warm from below. We found the water-resistant treatment on the shell to be effective at preventing dampness.
Features - An excellent compression sack is provided, and the bag uses mesh box baffles to boost loft and eliminate cold spots at the seams, which is welcome. What we particularly liked was the straps on the back that allow you to attach the bag to your sleeping mat so you're not sliding all over the place in your tent. Clever.
Size/Weight - For size/weight, there can be no better bag. There's even a half-length zipper to cut down on weight — they've really considered everything they could do to make this bag as small and light as possible.
Versatility - As we've mentioned, this isn't the most versatile bag, with its temperature rating and expensive price tag meaning it's worth it only to a specific warm-weather, longer-distance hiking niche.
Overall - The Hyperion is ideal if you're smaller, committed to long-distance trekking in warmer conditions and see the size and weight savings offered by this bag as worth the expensive price tag. If that's what you're after, it's hard to beat.
