Warbonnet Wooki Underquilt Review

Overview

The Wooki is a full-length, 850-fill down underquilt that works less like an accessory and more like a second, insulated hammock. It slips over a Warbonnet Blackbird or Traveler and needs no shock cord, no adjustment and no nightly negotiation with a cold shoulder. The price of that simplicity is a fixed fit: the quilt sits where Warbonnet put it, and a hammock sleeper who doesn’t lie the way it expects will feel it.

Key Specs

Spec	Detail
Weight	609.5 g (21.5 oz)
Temperature rating	20°F (-6°C)
Fill	850-fill Expi-Dry Gold PFC/PFAS-free DWR goose down, RDS-certified
Shell	15D high-threadcount PFC/PFAS-free DWR ripstop nylon
Baffles	Dual differential cut
Insulated area	Roughly 44 x 76 in, tapering toward the foot end
Lay	Head left, feet right (reverse lay available as a custom order)
Fits	Blackbird, Blackbird XLC, Traveler, Traveler XL (and Eldorado)
Extras	Stuff sack, secondary suspension loops for venting or stacking
Made in	USA

Performance

Setup. This is the Wooki’s whole argument. The insulated panel is sewn to a shell that wraps the bottom of the hammock and attaches only at the head and foot ends. Section Hiker’s reviewer compared it to a fitted bed sheet and credited it with removing the primary-and-secondary suspension routine that frustrates first-time underquilt users. Owners on Hammock Forums describe the same thing: it settles into position, stays there, and goes on in seconds. Because the shell seals around the hammock, drafts at the ends and shoulders are less of a problem than with a conventional quilt that creeps. There is also no shock cord pressing against the sleeper’s body overnight.

Warmth. Reports from owners of the 20°F version are consistent. One owner took it down to 27°F with 20 mph winds and said the warmth was noticeable. Another slept at 31°F in a synthetic base layer, a synthetic hoodie and wool socks, and called the night toasty. A customer who ordered 3 oz of overfill tested it on a 21°F night with an 18°F windchill and described it as extremely warm. The dual differential cut lets the down loft fully instead of being squashed against the hammock, and owners report no cold spots under the hips. The 850-fill down and 15D shell also pack smaller than some competing underquilts. One 0°F owner said his Wooki packed down smaller than his Hammock Gear Incubator.

Weight. At 609.5 g, the 20°F Wooki is not an ultralight outlier. Section Hiker noted the older version’s 20.85 oz was about what a conventional 20°F down underquilt weighs once its suspension is included. The saving comes from insulating only the part of the hammock a body touches. Warbonnet’s updated design (October 2025) keeps the shell fabric and fill spec listed above.

The diagonal-lay catch. The insulation is angled across the hammock and doesn’t wrap the full circumference. That works only if the sleeper lies on the diagonal, which most hammock sleepers do for a flat surface anyway. A sleeper who drifts off the panel will feel it. Section Hiker’s reviewer needed a few nights to learn the position and used a stuff sack of clothing to stay on the insulation. Restless sleepers should expect the same adjustment period.

Length and fit. There is no way to move the quilt. The Wooki-10 is sized for users up to about 6 feet, and the Wooki-11 for users up to about 6’6”. Even within those ranges, some owners have found their feet hanging off the insulation. One reviewer of about 70 inches ended up an inch or two off the end, depending on hang. Another owner on an XLC reported chilled feet after sliding forward when the hammock was hung level instead of foot-end up. A 180 cm user of a 10-foot Wooki called the foot coverage too short. Hang angle matters more here than with an adjustable quilt.

Venting. Early forum users noted the wrap-around design makes venting harder in warm weather. The current version adds secondary suspension loops, which allow venting and also let two quilts be stacked for extra warmth.

Pros & Cons

Pros

• No fiddling and no shock cord: it goes on in seconds and stays put
• Owners report no cold spots from the shoulders to the hips
• Overstuffed 850-fill down with dual differential baffles
• PFAS-free DWR fabric and RDS-certified down
• Secondary loops allow venting and stacking
• Sewn in the USA

Cons

• Fixed position: no adjusting the quilt to the sleeper
• Foot coverage can fall short for taller sleepers or loose hangs
• Insulation is diagonal and partial, so the sleeper has to lie on it
• Standard version is head-left/feet-right only
• Not meaningfully lighter than a conventional 20°F underquilt
• Designed for Warbonnet’s hammock dimensions

Who Should Buy This

The Wooki suits Blackbird and Traveler owners who want a three-season-to-shoulder-season underquilt that works on the first night. That includes newcomers who have been defeated by shock cord and anyone who values a fast camp setup over fine adjustment. It matches best with sleepers well inside the length range of their quilt who already sleep on a diagonal.

Skip it if you use a non-Warbonnet hammock with different dimensions, if you sleep restlessly or off-axis, or if you want to tune coverage and venting through the night. Weight-focused hikers should compare it against cottage-industry underquilts that are lighter for the same rating.

Verdict

The Wooki is the easiest underquilt to live with on a Warbonnet hammock, and its warmth backs up its 20°F rating in owner reports. Its fixed fit rules out some sleepers, and its weight is ordinary. For the Blackbird and Traveler crowd, it earns a strong recommendation.