Warbonnet Yeti 3/4 Underquilt Review

By topquilt.com · Updated Oct 21, 2026 · 7 min read

The Warbonnet Yeti 3/4 underquilt is the lightweight half of Warbonnet's underquilt lineup, sitting alongside the full-length Wooki. It is built around a simple observation: in an asymmetric hammock with a footbox, your legs carry less body weight and sit in a spot where a short pad works well, so you can save weight by insulating only your torso with down. This review is research-based. We summarize Warbonnet's published design and widely reported owner feedback; we did not lab-test the quilt. Warbonnet adjusts specs and options over time, so confirm details on the maker's current listing.

If you are still choosing between lengths, start with our full vs 3/4 underquilt comparison and the best 3/4 underquilts roundup.

Warbonnet Yeti specs at a glance

Figures are approximate and may change; Warbonnet is a small maker that refines products between batches.

How a 3/4 underquilt system works

An underquilt prevents cold butt syndrome by hanging insulation outside the hammock where your body weight cannot crush it. Your torso produces and loses the most heat, and your hips and shoulders press hardest into the hammock, so that is where down does the most good. Your lower legs lose less heat and weigh less, so a thin foam pad or your pack can handle them, especially in mild weather.

A 3/4 system therefore has two parts: the Yeti under your torso, and a leg pad inside the hammock. When both are right, you sleep as warm as in a full-length setup for less weight and bulk. When the leg pad is too thin or slides away, your feet get cold. That trade-off is the whole story of the Yeti.

Design breakdown

Built around the Blackbird footbox

The Blackbird has a sewn-in footbox on one side that gives your legs a flatter, more stable platform. That pocket is the perfect home for a short pad or empty pack, because it holds the pad in place far better than a standard gathered-end hammock. The Yeti is sized and shaped to cover the torso area of that asymmetric lay, so it pairs naturally with whatever you put in the footbox. On other hammocks, leg pads tend to wander, which is why the Yeti is a Blackbird-first product.

Differential cut and baffles

The Yeti uses a differential cut, with a larger outer shell that lets the quilt hang as a cradle so the down stays lofted. Baffled chambers keep the fill in place without the cold seams of sewn-through stitching. For a short quilt this matters even more, because every inch of coverage has to perform. See quilt baffles explained for the details.

Suspension and end-channel closure

Shock cord around the quilt pulls it snug against the hammock, and end suspension connects toward the hammock's ends so you can position the quilt along its length. Because the Yeti does not reach both gathered ends, positioning is the key skill: you want it centered under your shoulders and hips, not under the hammock's middle. The upper edge needs to close well at the shoulders, and the lower edge should overlap your leg pad slightly so there is no cold band at the thighs. Our underquilt suspension explained guide and how to hang an underquilt walkthrough cover the basics.

Length and width

The Yeti's length is intentionally short. Taller hangers should check the listed length and consider whether the quilt reaches their hips in a Blackbird XLC. Width is matched to Warbonnet's asymmetric lay, which helps side sleepers keep their shoulders covered. See the underquilt sizing guide for how to measure your coverage needs.

Choosing a leg pad

The pad under your legs decides whether the Yeti feels brilliant or cold. Owners commonly use one of these:

• Foam sit pad: light and cheap, enough for mild nights. Many hikers already carry one for breaks.
• Short closed-cell foam pad: warmer and still light; trim one to fit the footbox.
• Torso-length inflatable pad: the warmest option, and useful if you sometimes go to ground.
• Empty backpack: free, and surprisingly effective with a frame sheet, but only in warmer weather.

Match the pad's insulation to the night's temperature. Our sleeping pad in a hammock guide and best sleeping pads for quilts list help you pick.

Warmth and temperature ratings

Warbonnet's ratings are maker-set, not ISO or EN tested. For a 3/4 quilt, the rating describes your torso; the warmth of your legs depends on your pad. Owner reports suggest the Yeti performs close to its rating on the torso when hung correctly, but feet and calves are the common cold complaint when the leg pad is undersized. Cold sleepers, side sleepers who curl up, and anyone camping near the rating should lean toward a full-length quilt. See underquilt temperature ratings.

Weight and packed size

At roughly 12-15 oz, the Yeti saves several ounces over a full-length quilt like the Wooki and packs noticeably smaller. The real saving depends on your kit: if you already carry a sit pad or a pack you can use under your legs, the weight drop is genuine. If you have to add a dedicated pad just for the Yeti, much of the saving disappears. That is why the Yeti is most popular in ultralight hammock setups where every item does two jobs.

Yeti vs Wooki: the honest comparison

The weight gap looks big on paper, but add a dedicated foam pad to the Yeti side and it narrows to a few ounces. The Yeti wins clearly only when the leg pad is gear you would carry anyway.

Setup tips

1. Lie in the hammock first and note where your shoulders and hips fall in the diagonal lay.
2. Position the Yeti under that zone, with the top edge just above your shoulders.
3. Place the leg pad in the footbox so it overlaps the Yeti's lower edge by a few inches.
4. Snug the shock cord until the quilt touches the hammock with no daylight gaps.
5. Re-check after ten minutes; if your thighs feel a cold band, slide the quilt or pad to close the gap.

Owner feedback

• Light and compact: the most common praise, especially from thru-hikers and section hikers.
• Great with the Blackbird footbox: owners like how the footbox holds a leg pad in place.
• Cold feet if under-padded: the most common complaint, and usually fixed with a warmer leg pad.
• Positioning matters: getting the quilt centered under your torso takes a night or two.
• Less versatile: some owners later add a Wooki for cold-season trips and keep the Yeti for summer and fast trips.

Who the Yeti is for

• Blackbird and Blackbird XLC owners who want the lightest practical bottom insulation.
• Thru-hikers and fast packers who already carry a sit pad or short pad.
• Warm-weather and shoulder-season hangers who want a small, packable quilt.
• Experienced hangers who understand how to tune a two-part insulation system.

Who should skip it

• First-time underquilt buyers: a full-length quilt is simpler and more forgiving. See best underquilts.
• Cold sleepers and winter campers.
• Owners of symmetric gathered-end or bridge hammocks, where leg pads slide around.
• People who would need to buy a separate leg pad anyway; the weight savings shrink.

Pros and cons

Warbonnet Yeti alternatives

For a wider range of short quilts, see best 3/4 underquilts; for budget choices, best budget underquilts.

Building a complete Yeti system

A light underquilt only makes sense inside a light system. On top, Warbonnet's Diamondback top quilt is the matched choice, while the Hammock Gear Burrow and UGQ Bandit are popular alternatives. Add a tarp that can be pitched low against wind, a pad sized for your legs, and a protector for wet or windy nights; see underquilt protectors. The hammock gear checklist covers everything else.

Verdict: is the Warbonnet Yeti worth it?

For Blackbird owners who want to cut weight and already carry a pad or sit pad, the Yeti is one of the smartest underquilts available. It puts down where your body needs it most and uses the Blackbird's footbox to make a leg pad actually stay put. It asks more of you than a full-length quilt: you have to pick the right leg pad, position the quilt carefully and accept less margin in cold weather. If that sounds like a fun puzzle, buy the Yeti. If you just want to hang and sleep warm, get the Wooki.

See the Yeti at Warbonnet