Organic Cotton Sateen 500 Thread Count Duvet Cover Set Wrap your bed in silky-smooth luxury with breathable, toxin-free organic cotton designed for lasting comfort and refined elegance. Description Transform your bedroom into a five-star retreat with Whisper Organics' 500-thread-count sateen duvet cover set. Crafted from 100% GOTS- and Fairtrade-certified organic cotton, this premium set combines buttery softness with superior durability. The higher thread count weave offers a sleek, lustrous finish that stays breathable while adding a touch of warmth and indulgence. Designed with long-staple, single-ply yarns, it resists pilling and softens further with every wash. Hidden coconut shell buttons, corner ties, and decorative flange shams complete the look with functional elegance. What's Included Twin & Twin XL: 1 duvet cover + 1 sham Full/Queen: 1 duvet cover + 2 shams King/California King: 1 duvet cover + 2 shams Sizes & Dimensions Twin: Duvet Cover 68" x 90" | Sham 20" x 26" | Weight 3 lb Full/Queen: Duvet Cover 90" x 92" | Shams 20" x 36" | Weight 3.8 lb King/California King: Duvet Cover 104" x 92" | Shams 20" x 36" | Weight 4.2 lb Key Features 100% Organic Cotton, GOTS & Fairtrade Certified 500 Thread Count sateen weave for silky, lustrous softness Single-ply, long-staple yarns resist pilling and add durability Hidden coconut shell button closure for a natural, elegant finish Four corner ties keep duvet insert securely in place Shams feature a 2-inch decorative flange and button flap Hypoallergenic, toxin-free, and skin-friendly Machine washable; becomes softer with each wash Certifications GOTS (Global Organic Textile Standard) - leading global certification for organic fibers Fairtrade Certified Cotton - supports fair wages and ethical farming Made in Fairtrade Certified Mills Why You'll Love It Luxury Upgrade: 500-thread-count sateen delivers a richer, silkier finish than lighter weaves. Refined Detailing: Coconut shell buttons, corner ties, and flange shams elevate both style and function. Sustainable Comfort: Ethically sourced and naturally safe bedding for healthier sleep. Durable Quality: Long-staple yarns maintain smoothness and strength wash after wash. Care Instructions Machine wash warm or cool with like colors on gentle cycle. Do not leave damp. Tumble dry low and remove promptly, or line dry. Warranty & Returns 1-year warranty. If you're not satisfied, we'll arrange a replacement or full refund. Free return shipping included. FAQs What material is this set made from?100% GOTS-certified organic cotton in a 500-thread-count sateen weave. How many pieces come with each size?Twin/Twin XL includes 1 duvet cover and 1 sham. Full/Queen and King/Cal King include 1 duvet cover and 2 shams. What closure does it use?A hidden button closure with natural coconut shell buttons. Will the duvet insert stay in place?Yes—four internal corner ties secure the insert and prevent shifting. Do the shams have detailing?Yes—each sham includes a 2-inch decorative flange with a button flap closure.