Combining natural materials with uncompromising quality, Coyuchi’s Three Season Down Duvet Insert is a lightweight, lofty, and perfectly cozy layer you can use year round. It’s filled with pure down encased in a down-proof, 100% organic cotton shell. Stitch-through box construction keeps the fill evenly distributed, so you stay perfectly warm right down to your toes. Filled with 600-fill-power down, this dreamy duvet is a warm, fluffy option spring through fall and can be layered with a blanket in winter for excellent temperature control.