Slip® pure silk products are made using slipsilk™. Specially-commissioned and made to our exacting standards, slipsilk™ has been developed and refined for over ten years to provide the ultimate combination of shine, thickness, softness and durability. Includes 2 x queen pillowcases (51 x 76cm/20 x 30 ) and an exclusive Slip Delicates bag with zipper. How to use slip™ delicates bag:Place your machine washable slip™ product into delicates bag and fasten closure. You can put in more than one item, but don't overcrowd them. Wash with other delicates. Use a pH neutral liquid detergent, we recommend Slip Gentle Silk Wash. Select the water temperature recommended on the care label and machine's most gentle wash and spin cycles. Air dry in shade. Do not tumble dry. | Slip Dermstore Exclusive Silk Pink Pillowcase Duo and Delicates Bag | Dermstore