Silk-filled CoreExperience personalized comfort with our standalone silk filled core. Engineered to work flawlessly with KAILU duvet covers through a precision 1 to 1 tie system, it stays perfectly positioned without shifting. Built from hand stretched mulberry silk using traditional methods, each layer is carefully stacked and stitched for consistent weight distribution and breathability. Pure natural fill that molds to your needs with no synthetics or cold spots.