This Patio Chair Cover are made with 420D polyester. The material exhibits superior colorfastness, resists Uv, repels rain, resists tears and cold cracking, durable and last longer, protect your chair/lounge chair/sofa from sunlight, snow, rain and dirt all year round. There are drawstring to keep the cover secure on the chair. The convenient side drawstring at the bottom can help tighten and prevent the chair cover from being blown off.Simply hose this cover down with water and the dirt comes right off or clean with a damp cloth and mild detergent. Dry up the rocking chair cover in the sun for next use.