Top surface: micro (polyester) fabric bottom surface: 100% liquid-proof 1st quality membrane coated edge: cotton-polyester blended fabric with elastic edges, fully passable, does not slip under the duvet cover and offers excellent protection without interrupting your comfort. the product is not in the form of a cover, it is in a flexible structure that surrounds your mattress. for this reason, you should choose the same size product as your bed when ordering. if you do not want to use the product for many years and have no shrinkage problems, wash it at as low a temperature as possible. although the highest recommended temperature is 60 degrees, it has been proven in the r&d tests that the product's lifetime is extended if the product is washed at 40 degrees. dimensions: (length x height) baby: 70x140x30cm single: 90x190x30cm / 100x200x30cm /120x200x30cm double: 140x200x30cm / 150x200x30cm / 160x200x30cm overboard size: 180x200x30cm / 200x200x30cm product features: it not only protects against rusting but also prevents the formation of rustling sounds. it does not irritate the skin and offers comfortable comfort. it does not sweat thanks to its air permeability. it does not stain, does not create bad odor. it provides protection against the formation of dust mites and other allergens. it is ideal for individuals. it is useful for long-term inpatients. it can be used for children and adults who have problems with wetting the bed. the washing instructions should not be used with bleach, chemicals, etc. it can be washed up to 60 degrees. do not dry clean and do not iron. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.