Restful Nights All Natural Down Comforter. The All-Natural Down Comforter from Restful Nights is the most affordable quality down comforter that we could find. It has a sewn-through diamond box design that allows the down to fully loft while preventing fill shift. A 230 thread count, 100% cotton cover of the All-Natural Down Comforter is natural, soft and durable. 550 fill power duck down. 15" Diamond box design eliminates fill shift; ideal for year-round warmth. Sizes: Twin: 86" L x 63" W x 1.5" H; 3.3 lbs. Full / Queen: 90" L x 86" W x 1.5" H; 4.6 lbs. King: 90" L x 101" W x 1.5" H; 5.6 lbs.