Color:Royal Blue(Silk Filling) OOSilk is a silk bedding brand selling luxury silk pillowcases, silk sheets, silk comforters, silk eye masks etc. Our experienced workers handmade every silk eye mask to make sure what our customers receive will be the best. 1. Quantity: 100% Mulberry silk on both sides, including filling, 19momme. 2. Chemical-free: Naturally dyed (Ivory is the natural color of silk, never need to be dyed), we use only environmentally friendly dyestuff in silk products. The dyestuff is mostly from plants and flowers, which are friendly and healthy to the human body. Best choices for women and kids, and people who have sensitive skin. 3. Mulberry & Momme(mm): Mulberry silk is the highest-quality silk available. Mulberry silk has the highest benefits for skin care, hair care, quality sleep, and good health, of course, also coming with the highest price among all kinds of silk. Momme is the standard unit when describing the weight of silk. For all silk products, we suggest 19mm, which is the most sumptuous pillowcase available anywhere. 4. Color: More colors available. No color shading or fading. 5. Washing: Machine wash or hand wash at about 30°C, use a gentle, non-biological detergent specially created for washing silk. Don’t soak or wring, and never bleach or use any kind of bleaching agent. Wash silk separately. 6. Manufacture Country: Made in China. China is the country of origin for silk. Our workers have more than 20 years’ experience working in silk production. All our silk products are certified to OEKO-Tex Standard 100.