Super nice material, poly yet I have black interior cloth seats in my nice car but this new awful fabric Hyundai is using so I wanted to cover seat backs so my body lotion or dust would not show/stain/ruin the cloth for resale/trade in value. I bought xxxL shirts and covered my bucket's back seats! If you are slightly sweaty/wet from rain; the shirt drys super fast and the seat cloth is still protected. You can't really tell I have them on, they are super thin!