A down-filled quilt used as a comforter
Sleepers often use a duvet without 
a top bed sheet, as the duvet cover can... [DOC] [TLE] Down & Feather Duvet FAQs - Quilts Etc [PAR] QE Home | Quilts Etc has bedding collections of duvet covers, luxury bed ... 
Feathers are flat and two dimensional, and are used for flying, while smaller ... A 
duvet or sleeping bag filled with this down will be very light and incredibly warm.