750 Fill Power Down Duvet Insert by Sunday Citizen

The 750 Fill Power Down Duvet Insert by Sunday Citizen is the sort of bedding investment you feel far more than you see. Filled with 90% white duck down and 10% feathers, it has a 750 fill power that gives the duvet generous loft without making the bed unnecessarily heavy. Baffle-box construction keeps the filling distributed throughout the insert, while a down-proof, double-stitched shell helps keep it securely contained. The shell itself blends TENCEL™ lyocell with microfiber for a smooth, quiet finish, and corner loops make it easy to secure inside a duvet cover. Mid-weight and designed for year-round use, it creates the full, inviting bed that makes almost any beautiful duvet cover look—and sleep—better.

Mrs. Mayfair

“A duvet cover can change with the room; the insert underneath should simply be very good. I would rather have one beautifully lofty down insert that stays on the bed for years, then change the covers with the season, the house, or whenever I feel like making the bedroom different.”

Product Details

• Shell: 60% microfiber, 40% TENCEL™ lyocell

• Fill: 90% white duck down, 10% feathers

• 750 fill power

• 300 thread count

• Mid-weight construction designed for year-round comfort

• Baffle-box construction helps maintain even fill distribution

• Double-stitched, down-proof outer shell

• Designed for a quiet, rustle-free feel

• Corner loops for securing to a duvet cover

• Color: Off White

• Full / Queen: 90" W × 90" L

• King / Cal King: 106" W × 90" L

• OEKO-TEX® certified

• Imported

Care & Ownership

Dry clean only. Do not machine wash, bleach, tumble dry, or iron. Between cleanings, allow the duvet to air when changing the bed and gently redistribute the down through the baffle boxes as needed so the loft remains even. Keep it protected inside a duvet cover during regular use.

Maker / Heritage

Sunday Citizen grew from the meeting of multigenerational textile expertise and hospitality. Its earliest product was developed for a luxury hotel that needed a blanket exceptionally soft enough for guests yet durable enough for repeated use. The family-run company has since built its collection around that same balance of comfort, practicality, and textile development, remaining directly involved in the design and development of its fabrics and home products.