"The Yeti is our underquilt for end-gathered hammocks like our Blackbird, Blackbird XLC and Traveler series, but will also work on just about any end-gathered design. (It will NOT work on our Ridgerunner hammock, for that you need the Lynx).
The Yeti is a torso-length underquilt (40″ wide by 46″ long), covering roughly from shoulders to almost your knees, you’d then use a short leg pad under your legs in colder weather to achieve head to toe bottom insulation.
Note: the Yeti does not have a reversible lay, it is configured for a head left/feet right lay. The Yeti features a dual differential cut 20 Denier High Threadcount DWR ripstop nylon shell (Durable Water Resistance), and is overstuffed with 850 fill Hyper-Dry DWR goose down which meets the new RSD certification (Responsible Down Standard)."
The above wording is straight from Brandon, and his team at Warbonnet Outdoors.
Yeti Underquilt option:
Temperature rating: -6°C (20°F)
Fabric: 20D Nylon, DWR
Colour: Olive Green
View the full product details on the Warbonnet Outdoor website.