Ashlar Pillow Cover with Great Durability and Extremely Comprehensive. Material High quality Polyester. Size: 18 x 18 inch / 45 x 45 cm and 12 x 20 inch Measure by hands maybe have a little errors Please understand. Package: Set of 4 Perfect fit for your home1. These pillows are a perfect fit for your entire home, whether you need to decorate your bed or rejuvenate your couch these pillows fits perfectly. 2. These pillows go well with all types of bedroom and guest room settings. Washing: 1. Wash the pillow set using machine wash on gentlest cycle using cold water and a fabric softener. 3. Hand washing the set would be ideal. Finally, hope you can enjoy your shopping time in Ashlar.