• Luxury Cotton Bedding Styled on Outdoor Hanging Swing - California Lifestyle | MATTEO
  • Alpine Forest Green Sei Cotton Fitted Sheet with Pillow Shams - Overhead Flat Lay | MATTEO
  • Alpine Forest Green Sei Cotton Sateen Fabric - Close-Up Weave and Drape Texture Detail | MATTEO
  • Smoke Black Sei Cotton Fitted Sheet with Pillow Shams - Overhead Flat Lay | MATTEO
  • Smoke Black Sei Cotton Fabric - Close-Up Drape Texture Detail | MATTEO
  • Bark Dark Brown Sei Cotton Fitted Sheet with Pillow Shams - Overhead Flat Lay | MATTEO
  • Bark Dark Cotton Sei Fabric - Close-Up Drape and Weave Detail | MATTEO
  • Night Navy Black Sei Cotton Fitted Sheet with Pillow Shams - Overhead Flat Lay | MATTEO
  • Night Deep Navy Sei Cotton Fabric - Close-Up Weave Texture Detail | MATTEO
  • Coal Charcoal Grey Sei Cotton Fitted Sheet with Pillow Shams - Overhead Flat Lay | MATTEO
  • Coal Sei Luxury Cotton Sateen - Close-Up Fabric Weave and Drape Detail | MATTEO
  • Fig Cotton Sateen Sei Sheet Set - Flat Lay View | MATTEO
  • Fig Cotton Sateen Sei Fabric - Close-Up Drape and Weave Texture Detail | MATTEO
  • Bay Grey Cotton Percale Fitted Sheet with Pillow Shams - Top View | MATTEO
  • Bay Cotton Sei Fabric Swatch - Close-Up Garment-Washed Weave Texture | MATTEO
  • Iris Cotton Percale Tru Sheet Set with Pillow Shams - Overhead View | MATTEO
  • Iris Sei 600TC Cotton Sateen Duvet Cover - Close-Up Draped Fabric Texture, Cool Grey Colorway | MATTEO
  • Mica Cotton Percale Tru Flat Sheet and Pillowcases - Top View on Made Bed | MATTEO
  • Mica Sei Cotton Sateen Fabric in Soft Grey - Garment-Washed Drape Texture Close-Up | MATTEO
  • Oat Cotton Sei Fitted Sheet Set with Shams - Bed View | MATTEO
  • Oat Sei Cotton Sateen Fabric Swatch - Close-Up Weave and Sheen Texture Detail | MATTEO
  • Moon Cotton Percale Flat Sheet with Pillow Shams - Overhead Flat Lay | MATTEO
  • Moon Sei 600TC Cotton Sateen Duvet Cover - Close-Up Draped Fabric Weave Detail, Warm Ivory | MATTEO
  • White Cotton Percale Sheet Set with Four Pillows - Overhead View | MATTEO
  • White Sei 600TC Cotton Sateen Duvet Cover - Close-Up Draped Fabric Texture Detail | MATTEO
  • Off White Cotton Sei Fitted Sheet and Pillow Shams - Overhead Flat Lay | MATTEO
  • Off White Sei 600TC Cotton Sateen Duvet Cover - Close-Up Draped Fabric Sheen Detail | MATTEO
  • Greige Sei Cotton Sateen Sheet Set with Pillow Shams - Bed Top View | MATTEO
  • Greige Sei Cotton Sateen Fabric - Softly Draped Sateen Weave Texture Close-Up | MATTEO
  • Salt Cotton Sei Flat Sheet with Pillowcases - Overhead Flat Lay, luxury sateen bedding | MATTEO
  • Salt Sei Cotton Sateen Fabric in Pale Blue-Grey - Draped Weave Texture Close-Up | MATTEO

    Sei Fitted Sheet

    100% Cotton | 600 Thread Count | Sateen Weave | Garment-Dyed
    Regular price $345.00
    Color:
    Size:

    Frequently Asked Questions

    What fabric and thread count is the Sei Fitted Sheet?

    The Sei Fitted Sheet is 100% cotton in a sateen weave at 600 thread count, garment-washed for an immediate softness. It is designed and manufactured by MATTEO in Los Angeles, using the same 120/2 Ne yarn in both warp and weft for a balanced, silky-smooth hand that holds up through repeated washing.

    Does the Sei Fitted Sheet deliver the kind of crisp, smooth finish found in hotel-quality bed sheets?

    Yes. The 600 TC sateen weave produces the taut, luminous surface associated with high-end hotel bedding, while the full-perimeter elastic band and flat felled corner seams maintain that finish through institutional-level use. MATTEO caps thread count at 600 because higher counts produce a stiff, airless fabric; at 600 TC the sheet sleeps cool and stays smooth without sacrificing drape.

    Will the Sei Fitted Sheet fit a deep mattress, and what sizes are available?

    The 16-inch pockets fit mattresses up to 20 inches deep comfortably, with corners reinforced by a flat felled seam tacked at each top corner to prevent blowouts under tension. The Sei Fitted Sheet is available in Twin, Twin XL, Full, Queen, King, and Cal King.

    How do I care for the Sei Fitted Sheet to keep the sateen finish intact?

    Wash in lukewarm water with a gentle detergent on a gentle cycle, keeping lights and darks separated; do not overload the machine, as excess friction damages long cotton fibers. Tumble dry on low heat and remove promptly to reduce wrinkling, or line dry for best results. For garment-dyed colorways, avoid chlorine bleach, alpha hydroxy acids, and benzoyl peroxide, as the reactive dyes are not resistant to whitening agents.

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