【100% Pure Mulberry Silk】Mulberry silk is a natural animal protein fiber, and THXSILK's 3-piece set includes 1 duvet cover and 2 zippered pillowcases, all made of 100% mulberry silk. Perfect for your skin and hair. 【OEKO-Tex Standard 100 Certification】Proven by the Oeko-Tex certification, which ensures that the fabric and filling material was constructed with healthy and natural materials. 【Perfect for Hot and Cold Sleepers】Silk's natural temperature regulating properties keep you comfortable in every season. It can effectively reduce hot or cold irregularities when sleeping by wicking moisture from the body and adjusting to body temperature. Pure silk is breathable and adjustable in temperature, which means it can keep you cool on hot nights and warm on cold nights. 【High Quality Craftsmanship & Design】We specialize in producing silk bed sheets, a silk duvet cover, and a pair of 2 pillowcases with hidden zippers that are sturdy and not easily damaged. These three piece sets can be machine washable, and Laundry detergent can be special pure silk detergent or neutral detergent. 【Multiple Benefits】Super soft, comfortable, smooth, breathable, most suitable for skin care; Helps maintain skin moisture. Perfect for special occasions such as Mother's Day, Father's Day, Thanksgiving Day, Christmas or anniversary. China Top 10 Silk Brands – More than 17 years of expertise in silk products. Highly experienced in silk products design & production - 200,000 ㎡ silk farm, growing our own mulberry, experienced in silk production, ensures high quality of raw materials. Luxurious Material - THXSILK silk sheets are handcrafted by top 7A+ mulberry silk, giving a truly luxurious feeling.