This cozy duvet is generously filled with a hollow fiber synthetic which traps and retains heats in its central core to keep the sleeper warm.50% silk 50% Microfiber Lightweight fill can be used spring through fall Silk clusters provide cool natural comfort gel clusters provide down like warmth Molds to your body like a down duvet Breathable and soft 280 thread count cotton sateen cover May be washed yearly or dry cleanedLength: 86 Size: Twin Width: 66