"The big pig is our largest stuffsac. At maximum capacity, it can fit a Blackbird XLC, Winter Wooki Underquilt and Winter Topquilt.
 
Weight: 32g
 
Dimensions: 20″ X 8.5″"
 
The above wording is straight from Brandon, and his team at Warbonnet Outdoors. These are the double-ended versions, as per the photogragh.