100% Mulberry Silk Luxury Pillowcases 22 mm highest grade silk. These gorgeous silky cases are extra SOFT And very COMFY: Made of 100% breathable and soft 22 momme mulberry silk Great benefits come with silk! Silk is anti-aging and hypoallergenic : it prevents fine lines, creases on your face. In another words , it is wrinkle-resistant in the long run. Silk prevents moisture loss compared to cotton which keeps your skin hydrated and prevents occurrence of wrinkles while also preventing acne and breakouts - These silk cases are perfect for hair as it prevents frizz and breakages due to lack of friction. Say good bye to dull lifeless hair :) Silk is a natural temperature regulator! Care instructions: Just Hand wash with mild detergent and lay to dry. Just be a little gentle to this beautician assistant **Please note standard shipping within Canada is sent by letter mail and is untracked. For more than 2 items purchased by standard shipping, these will be sent in 2 shipments. For upgraded or tracked shipping please choose the option at checkout. All US orders are sent tracked and Int as Small packet unless upgraded"