Our humaone 5-pack derby rib panties are made of 2 pieces of black, 2 pieces of skin and 1 piece of white color cotton fabric and their content is: 95% cotton and 5% elastane. it provides comfortable comfort. if the washing instructions are followed, it does not deform and offers long-term enjoyment. washing instructions: we recommend washing colored items at 30 degrees and whites at 40 degrees. do not use bleach or bleach. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.