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HomeHikingTherm-a-Relaxation Hyperion 20 Sleeping Bag Evaluate

Therm-a-Relaxation Hyperion 20 Sleeping Bag Evaluate


Therm-a-Rest Hyperion 20 Sleeping Bag Review

The Therm-a-Relaxation Hyperion 20 is an ultralight down sleeping bag designed for again sleepers that weighs 20 ounces (1 lb 4 oz) and is insulated with 900 fill energy waterproof down. It has a box-baffled building to eradicate chilly spots and a half-length zipper to save lots of weight. When stuffed the Hyperion 20 packs down to simply 3L making it excellent for journeys the place pack house is at a premium. The insulation is zoned with 70% on prime and 30%, leveraging your sleeping pad insulation for heat. What’s the catch? It has a tapered lower with restricted girth, however in the event you can match inside comfortably, it’s a candy ultralight sleeping bag.

RELATED: 10 Greatest Down Sleeping Luggage for Backpacking

Specs at a Look

  • Gender: Unisex
  • Weight: 20 oz (1 lb 4 oz) – Measurement Medium, Size 72″
  • Fill Weight: 12.5 oz
  • Sizes: S, M, L
  • Kind: Mummy
  • Packed Measurement: 3L
  • EN Consolation Temperature Ranking: 32F (-6C)
  • EN Restrict Temperature Ranking: 20F (-23C)
  • Development: Field Baffled
  • Girth/Hips/Footbox (dimension common): 57″, 49.5″, 43″
  • Insulation: 900 Fill Goose Nikwax Hydrophobic Down RDS
  • Zipper: Half-Zipper
  • Zipper Facet: Left
  • Draft Tube: Sure
  • Shell/Liner Cloth: 10D Nylon RipStop with DWR / 10D Nylon RipStop
  • Stuff Sack: Compression sack included and a material storage bag
  • Go to Therm-a-Relaxation for full Specs

Zoned Insulation

The Hyperion 20 sleeping bag is a backpacking and mountaineering mummy-style sleeping bag designed for again sleepers. I can’t emphasize the latter extra. The insulation is distributed in a zonal vogue with 70% on prime and 30% beneath you, leveraging the chilly resistance of your sleeping pad to maintain you heat. In case you roll over onto your aspect, you’ll sleep a lot colder than in the event you sleep in your again with the majority of the goose-down insulation on prime of your torso. To forestall this, the Hyperion 20 comes with non-obligatory sleeping pad straps that hook up with loops on the again of the bag. These act equally to quilt-pad attachment straps to maintain you in your sleeping pad at night time.

Optional pad straps can keep you on your pad.
Optionally available pad straps can preserve you in your pad.

Ultralight Design Options

At simply 20 oz, how did Therm-a-Relaxation make this sleeping bag so light-weight?

The bag is heavily tapered and fits snug to reduce weight
The bag is closely tapered and matches comfortable to cut back weight

First off, the sleeping bag is kind of tapered and is designed to suit you with out plenty of further inner house. I can match into its 57″ shoulder girth (dimension common) however there isn’t an entire lot of additional room for me inside from my waist up. The footbox is somewhat spacious, nevertheless, and my ft can simply splay aside comfortably.

The Hyperion is insulated with 900 fill energy Nikwax waterproof goose down which is premium stuff when it comes to warmth-to-weight ratio. Increased fill energy down like this supplies extra heat by weight than decrease fill energy down and is used to save lots of weight.

Whereas the Hyperion 20 has a two-way zipper, it’s solely half-length, so it ends at my knees: this protects weight by eliminating the necessity for an extended zipper, draft tube, and anti-snag taping, which may be discovered on the higher half of the zipper. The 2-way zipper makes it potential to vent the bag to a sure extent, though not within the footbox. In case you get habitually sizzling ft or you’ll want to camp in very popular/humid climate, I’d get a distinct sleeping bag with a full-length zipper as a substitute.

The draft tube is covered with a piece of grosgrain to prevent zipper snags.
The draft tube is roofed with a bit of grosgrain to forestall zipper snags.

The light-weight 10d ripstop nylon material on the Hyperion is considerably delicate and also you’ll need to deal with it gently to forestall it from tearing. The anti-snag tape alongside the zipper draft tube helps forestall rips, however you’ll need to watch out with it nonetheless.

The hood is a reasonably normal mummy hood with a right-side management to allow you to cinch the hood closed. It doesn’t have house for a pillow or something, however it would transfer with you in the event you roll over like a jacket. A snap on the prime of the aspect zipper helps seal the hood on the left aspect and preserve its form even when the aspect zipper will not be absolutely closed.

This snap takes pressure off the zipper and helps maintain the hood’s shape.
This snap takes the strain off the zipper and helps preserve the hood’s form.

Advice

The Therm-a-Relaxation Hyperion 20 is an ultralight sleeping bag designed for again sleepers preferring the draft-free efficiency of a sleeping bag over a backpacking quilt. Weighing 1 lb 4 oz, it’s optimized for backpacking journeys the place house and weight are a premium. It’s by far one of many lightest sleeping accessible at this time however it’s a cosy match, more durable to vent, and finest utilized in cooler temperatures somewhat than sizzling and humid ones. The benefit of utilizing a sleeping bag like this over utilizing a backpacking quilt, in addition to the plain low weight and packability, is that you just’ll have a draft-free expertise as a result of it’s utterly enclosed. The drawback is that it has a narrower temperature vary and you’ll’t aspect sleep with it. However in the event you favor a sleeping bag, you again sleep, and wish a bag for cooler, shoulder season (spring and autumn) climate, it’s a high-performance alternative.  A 32-degree mannequin can also be accessible.

Disclosure: Therm-a-Relaxation donated a sleeping bag for assessment.

Evaluate 4 Costs

Final up to date: 2023-04-28 01:15:01

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