Twin: 34oz, 68x90" Queen: 46oz, 90x90" King: 54oz, 104x90" California King: 57oz, 96x106" 60% Cotton & 40% Polyester 400 Thread Count CLOUD SOFTNESS - Our premium duvet insert is filled with fluffy feather down (50% DOWN FIBER, 25% DOWN, 15% FEATHER FIBER & 10% FEATHER). This quilted baffle box design keeps the down feather filling even, to prevent the fill from shifting or clumping, maximizing fluffiness and warms up the person when they get too hot or cold.