Warbonnet Yeti Underquilt Review

Overview

The Yeti is Warbonnet’s torso-length hammock underquilt: 850-fill goose down in a 20D ripstop shell, sewn in the USA, built for the Blackbird and Blackbird XLC. It covers shoulders to just above the knees and leaves the rest to a short foam or inflatable pad. That trade is the reason it weighs 319 g in the 20°F rating and packs to roughly the size of a Nalgene. It’s a sharp choice for three-season hammock hangers who want to carry less. It’s a poor one for anyone who wants to hang it and forget it.

Key Specs

Spec	Detail
Weight	319 g (11.25 oz)
Temperature rating	20°F (-7°C)
Length style	Torso (2/3) length
Dimensions	40 in wide × 46 in long (about 102 × 117 cm)
Fill	850-fill Expi-Dry Gold PFC/PFAS-free DWR goose down, RDS certified
Shell	20D high-thread-count DWR ripstop nylon, dual differential cut
Lay	Head left, feet right (not reversible)
Compatibility	Blackbird Original, Blackbird XLC, other end-gathered hammocks
Construction	Sewn in the USA by Warbonnet
Starting price	From $175

Performance

Warmth. The 20°F number is a rating for the quilt, not a promise for the whole sleep system. Warbonnet pairs the Yeti with a short pad under the legs for colder nights, and owners treat that as part of the package. Reviewers who have done so report good results. A UK reviewer at Highball Blog logged nights down to about -4°C and called the quilt’s performance exceptional. Another comparison tester, writing for The Paddle Junkie, found the 20°F figure optimistic and suggested leaving margin. The consistent reading from owners is that the quilt is comfortable in the 30s°F with a decent top quilt and a leg pad, and that the last ten degrees on the label depend on setup and sleeping insulation.

Setup and fit. Hanging the Yeti is quick. It rides on shock cord that loops over the gathered ends of the hammock. One early reviewer clocked the process at about 20 seconds. The same design draws the most criticism. Because the quilt isn’t pulled tight by a dedicated suspension, some sleepers shift off it and wake with a cold back and backside. One owner in Norway froze on four of his first five trips, between roughly 10°F and 32°F, before adding extra shock cord from each of the four corners up to his hammock’s ridgeline. After that, he slept comfortably at around 19°F. Other owners say theirs has never moved. Warbonnet’s own underquilt protector, which zips to the hammock’s top net, makes in-night adjustment easier, and at least one owner uses it for that reason.

Weight and packability. At 319 g, the Yeti sits at the light end of 20°F underquilts, especially against full-length designs. A comparison review by The Paddle Junkie listed a full-length 20°F competitor at 29.75 oz, more than double the Yeti. Owners opening the shipping box report being surprised by how little it weighs. Warbonnet’s coverage is the savings: legs are on you. A closed-cell pad cut to knee length adds modest weight and doubles as a sit pad, so the combined system is still light.

Materials and build. The 20D shell with DWR and treated down handles tent condensation and trail drizzle without drama, but it isn’t a substitute for a tarp. Owners praise the construction quality and the clean stitching, and reviews on Warbonnet’s site average 4.76 out of 5 across 42 ratings. The liner is cut slightly smaller than the shell, which keeps loft around the sleeper, a feature across Warbonnet’s underquilt line. Down has been reported staying inside the shell, not escaping. Owners single out the shock cord as the likeliest wear item, though it looks simple to replace.

Limits. The Yeti has a fixed head-left, feet-right lay. A mirrored version needs to be ordered through Warbonnet’s custom page. It also doesn’t fit Warbonnet’s Ridgerunner, which needs the Lynx underquilt instead. Weight has also moved a little over the years: older listings cite about 12.5 oz, while a recent owner listing for a 20°F model reports 11.25 oz.

Pros & Cons

Pros

• 319 g with 850-fill down, among the lightest 20°F underquilts available
• Packs to roughly Nalgene size
• Fast, simple shock-cord setup
• PFAS-free DWR down and a 20D shell that shrugs off damp
• USA construction with consistently high owner ratings
• Fits Blackbird, Blackbird XLC and most end-gathered hammocks

Cons

• Torso length means a leg pad is needed below roughly the 40s°F
• Some sleepers report slipping and cold spots until they add corner cords
• 20°F rating is optimistic without a pad and a warm top quilt
• Not reversible; mirrored lay requires a custom order
• Doesn’t fit the Ridgerunner
• Pricey, from $175

Who Should Buy This

The Yeti suits three-season hammock campers with a Blackbird who count grams and are willing to spend ten minutes dialing in the hang. It particularly rewards people who already carry a torso-length pad for the ground or have a spare foam square. Buyers who want full-length warmth in one piece, who sleep restlessly and shift around a lot, or who would rather not tweak suspension should look at a full-length underquilt with a tensioned suspension. The Ridgerunner crowd needs the Lynx.

Verdict

The Yeti is a light, well-built underquilt that delivers its warmth when paired with a leg pad and a tight hang. It earns a place in the pack of any Blackbird owner chasing a low base weight, with the understanding that the last degrees of its rating take some setup work.