Polyester 【Outdoor & Waterproof Material】Our black and white outdoor pillow covers made of durable polyester with PU coating, which is sturdy,breathable and comfortable can effectively prevent water and stains from splashing. Upgrade your patio, garden, and porch furniture with waterproof outdoor pillow covers 【Package & Size】Each package contains 4 pcs of 18 x18 inches(45x45 cm) outdoor pillow covers. No Cushion Insert. Please allow 1-2cm measurement deviation exist due to hand-cutting and sewing. 【Hidden Zipper】Outdoor waterproof pillow covers use a quality invisible zipper on one side, and the zipper works smoothly that makes it easy to insert and remove of the pillow inserts. Pattern available in both sides. 【Outside and Indoor Decorations】This outdoor throw pillows covers suitable for tent, car, bed, sofa, seat,couch,bench and other outdoor furniture. Good decorations for outdoor garden, patio, balcony, living room, bedroom, party, picnic, wedding, office, cafe, etc. 【Easy Washing】Patio furniture pillows can be hand-washed or machine-washed in cold separately, gently rolls only, please do not bleach, hang to dry or tumble dry, do not iron and it'll look brand new. outdoor pillow covers