100% Silk: 25 momme mulberry silk on both sides. 20% More Silk than 22 momme. OEKO-TEX Standard 100 Certified. Soothes Hair and Skin. Enjoy hassle-free anti-aging hair and skin care. Helps skin stay hydrated while you slumber and prevents against bedhead. Hypoallergenic. Greater protection than 22 momme against dust, allergens and toxins. Reliable Fit. Perfect size for standard (20" x 26"), queen (20" x 30") or king (20" x 36") pillows. Deep envelope closure. Pure and natural. Our products do not contain chemicals nor dyes. Recommended by beauty experts and dermatologists.