Therm-a-Rest
Parsec 0F/-18C
$570
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Sea to Summit
Score 8.0 / 10
Average of substance, design, and value.
1lb 9.7oz for 29°F comfort: 850-fill down in vertical box baffles, 360° collar and full draft tubes. Independent testers flag the 10D shell as the tradeoff for that weight.
$549 typical
This is expensive but not status-priced: the weight, 850-FP down, vertical box baffles, full draft tube and 360° collar are independently observed performance hardware. It is the only premium-priced selection.
High-loft down delivers excellent warmth per gram.
Limits down migration and avoids stitch-through cold lines.
Very low weight and soft hand, at a durability cost.
Compared with 4 other products in edition 1.
This product: 8.7 out of 10
Independent testing reports 29°F comfort and warmth on 20–25°F nights.
This product: 9.5 out of 10
A little wider through shoulder and hip than rival ultralight mummies, with a large hood, full draft tube and 360° collar. The main UX flaw is a snag-prone zipper and no stash pocket.
Treat the 10D fabric as performance equipment: protect from abrasive ground, store loose and carry patch tape. Independent testing specifically cautions that its thin fabric is less durable.
seatosummit.com
www.cleverhiker.com
www.outdoorgearlab.com
850-FP down in vertical box baffles.
This product: 9.1 out of 10
Wider mummy fit, 360° collar and substantial draft tubes.
This product: 6.8 out of 10
Down remains moisture-sensitive; use a dry bag.
This product: 9.6 out of 10
1 lb 9.7 oz unisex weight in independent test.
This product: 6.5 out of 10
Reviewer flags thin material and shorter expected life.
This product: 7 out of 10
Simple controls; zipper can snag and no stash pocket.
First Ascent
$336
