How to use: Simply place the poly cotton head rest cover on your head rest for a more comfortable experience. Note that different colors have different packaging options - white and natural are single units, and grey, white, and natural come in packs of 10. For maintenance, if there are oil stains on the cover, make sure to use a stain - removing solution to pretreat them within 24 hours. When washing, use a cool or warm setting on your machine and never add bleach. When drying, set the dryer to medium temperature and remove the cover as soon as it's dry to avoid wrinkles.