Verdict
Head-to-head · Best 0 Degree Sleeping Bags

Feathered Friends Ibis ES 0 vs Therm-a-Rest Parsec 0

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Feathered Friends Ibis ES 0 comes out ahead by a narrow margin (4.8 vs 4.6). The gap is mostly about buyers who want artisan-grade hand-built quality — read the strengths below before deciding.

Feathered Friends Ibis ES 0
Higher ratedRanked #5 in Best 0 Degree Sleeping Bags
Feathered Friends Ibis ES 0
$860

The Ibis ES is the artisan pick — Feathered Friends' hand-built zero-degree bag with 950+ fill goose down.

Strengths
  • 950+ fill power goose down
  • Hand-built in Seattle
  • Lifetime warranty
Watch-outs
  • Highest price
  • Long lead time
  • Limited availability
Therm-a-Rest Parsec 0
Ranked #4 in Best 0 Degree Sleeping Bags
Therm-a-Rest Parsec 0
$520

The Parsec 0 is the fast-and-light pick — Therm-a-Rest's lightest zero-degree bag for speed missions.

Strengths
  • Lightest zero-degree bag tested
  • Toe Box for foot space
  • Therm-a-Rest's sleep-system integration
Watch-outs
  • Not as warm as Kodiak MF at the rating
  • Less premium feel than WM
  • Shorter draft tube

How they stack up

Feathered Friends Ibis ES 0

Highest fill power. Hand-built. Lifetime warranty.

Therm-a-Rest Parsec 0

Lightest pick. Less warm than Kodiak MF. Toe Box.

Specs side-by-side

SpecFeathered Friends Ibis ES 0Therm-a-Rest Parsec 0
Fill950+ fp goose down800 fp down
OriginUSA hand-built
Weight50 ozLightest 0°
BrandFeathered FriendsTherm-a-Rest
FeaturesToe Box
← See the full ranking of best 0 degree sleeping bags