Casaluna Supima Percale Duvet Cover Set
Our Supima percale duvet cover set brings hotel-quality comfort to your bedroom with pure long-staple cotton that gets softer with every wash. The crisp percale weave delivers breathable, cool-to-the-touch comfort that stands up to years of use.
We source only 100% Supima cotton — exclusively grown in the American Southwest — for its exceptionally long fibers that create a smooth, pill-resistant fabric. The one-yarn-over, one-yarn-under percale construction produces a matte finish and lightweight drape that works beautifully across all seasons. Each set includes one duvet cover with interior corner ties and button closure, plus two matching standard shams.
What makes Supima percale special
Supima cotton construction & weave
Supima cotton represents less than 1% of cotton grown worldwide, prized for fibers that measure 35% longer than standard varieties. We use these premium extra-long staple fibers exclusively in our bedding Casaluna Supima percale sheet set collection because they produce stronger, smoother fabric that resists pilling and breakdown over time.
The percale weave creates a one-over-one-under pattern that yields a crisp, matte surface distinctly different from sateen finishes. This tighter weave structure delivers exceptional breathability while maintaining durability through hundreds of wash cycles. The fabric weight sits at a comfortable mid-range that drapes beautifully without feeling heavy or clingy against skin.
Sizing & bed compatibility
Available sizes
Our Supima percale duvet cover accommodates standard bed dimensions across three sizes. The Full/Queen option measures 88″ × 92″ and fits duvets up to 86″ × 90″. King/Cal King sizing reaches 104″ × 92″ to cover duvets measuring 102″ × 90″ or California King 104″ × 88″ inserts.
Fit details
Internal corner ties at all four corners secure your duvet insert and prevent shifting during the night. The envelope-style button closure along the bottom edge creates a clean finished look while making duvet changes straightforward. We recommend sizing up if your duvet insert runs oversized or if you prefer extra fabric drape.
Care instructions & longevity
Machine wash your duvet cover set in cold or warm water with like colors using a gentle, bleach-free detergent. The percale weave maintains its structure best when tumbled dry on low heat and removed promptly to minimize wrinkling.
Supima cotton’s long fibers create fabric that actually softens and improves with repeated washing. You’ll notice the crisp hand relaxes slightly after the first few washes while maintaining the matte finish and cool touch that defines percale. Iron on medium heat if desired, though many customers appreciate the natural, lived-in texture that develops over time. The OEKO-TEX certification ensures our fabric meets rigorous standards for harmful substances, making this bedding safe for sensitive skin and family use.
More from our Supima percale collection
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Questions about the Supima Percale Duvet Cover Set
Percale uses a one-over-one-under weave that creates a matte, crisp surface with excellent breathability. Sateen employs a four-over-one-under weave that produces a silky, lustrous finish. Percale feels cooler and more structured, while sateen drapes with a softer, smoother hand. We recommend percale for warm sleepers and those who prefer a fresh, hotel-style feel.
Minimal shrinkage may occur during the first wash cycle, typically 2-3% which is standard for natural cotton fabrics. We've accounted for this in our sizing, so your duvet cover will maintain proper fit after initial washing. Wash in cold or warm water and tumble dry on low heat to minimize any dimensional changes. The fabric stabilizes after the first few launderings.
Our duvet cover features internal corner ties at all four corners that attach to corresponding loops on your duvet insert. Thread the ties through the insert loops and secure with a simple knot or bow. This anchoring system prevents shifting and bunching throughout the night. Most quality duvet inserts include corner loops — if yours doesn't, you can add them with a few simple stitches.
Yes, our bedding Casaluna Supima percale sheet set uses identical fabric construction — the same 100% Supima cotton with percale weave and thread count. The sheets and duvet cover coordinate perfectly for a complete bed ensemble with consistent texture, breathability, and care requirements. Many customers purchase both for a fully matched look.
Absolutely. This duvet cover works with any insert type including down, down-alternative, or synthetic fills. The corner ties accommodate standard duvet inserts with corner loops, and the interior dimensions provide proper coverage for traditional comforters. The breathable percale weave pairs especially well with natural down since both materials regulate temperature effectively.
Our Supima percale maintains a thread count in the 300-400 range, which represents the ideal balance for authentic percale. Higher thread counts often compromise the crisp hand and breathability that define quality percale weave. The extended length of Supima cotton fibers creates smooth, durable fabric without requiring excessively high thread counts that can make bedding feel dense or heavy.
The included shams are sized for standard pillows (20" × 26"). We offer Euro shams and king shams separately for customers who want to layer different pillow sizes. The envelope-style closure on all our shams creates a clean tucked finish that works whether you display pillows upright or lay them flat on your bed.