KAILU Silk-Filled Core Duvet Insert

Customize your comfort with our hand-stretched silk-filled cores—now available on their own.

Designed to pair seamlessly with our duvet covers, each silk-filled core features a 1-to-1 tie system that aligns with interior ties on every KAILU cover, keeping the insert securely in place with no shifting or bunching.

Crafted using centuries-old techniques, each insert is filled with layers of hand-stretched mulberry silk, stacked and stitched into place to create an even, breathable weight—no cold spots, no synthetic fill, just natural comfort that adapts with you.

Use a single core for lighter coverage or layer two together for extra warmth. Whether you're upgrading from a single to a dual-core setup or simply refreshing your insert, our silk cores give you the flexibility to sleep your way.

Temperature-regulating. Long-lasting. Rooted in heritage.

Each insert is encased in cotton sateen for durability and ease of care. Compatible with all KAILU duvet covers.

Twin: 66 in. x 86 in.

Queen: 86 in. x 86 in.

King: 94 in. x 104 in.

Emperor: 98 in. x 110 in.