Silver Cloud Charcoal Satin Pillowcase 2-Pack Standard 50x75cm2 x standard size pillowcases 50 x 75 cm with invisible zip closure. Infused with 3% natural silver ions, helping eliminate bacteria by 99. 7%, leaving your pillow fresh and skin clean. Silver Cloud's satin has a less absorbent surface that helps retain the natural oils in your hair and skin, allowing your skincare to sink into your skin during your nightly regime. Satin provides a cooling sensation during sleep and contributes to overall comfort.