"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. 
 
 View the full product details on the Warbonnet Outdoor website.