Description: Set of 2 pieces stretch flannel furniture sofa armrest cover protector and 20 pieces twist pins. (These pins twist firmly into place and come out easily by twisting them the opposite way and they are no damage to the fabric; perfect for arms covers, slipcovers and bedskirts, no more sliding and slipping, hold fabric secure to furniture without harming fabric.) Made of soft polyester, non slip, machine washable. Thickened design, use with twist pins to fix covers, will protect your sofa arm from wear, dirt, stain better. Adjustable strench size, suits most of type furniture, like chair, loveseat, sofa, etc. It is great for home with children and pets, will make your armrest keep pristine longer. Specification: Material: Polyester Flat size: approx. 55*10*16.5cm/ 21.65*3.94*6.5" Size after installation (might be a little bit larger or smaller because of the stretch fabric) arm length: approx. 55cm/ 21.7" arm width: approx. 15cm/ 5.7" arm thickness: approx. 25cm/ 9.7" Twist pin size: Clear head (Dia*H): 12*3.5mm/0.47*0.14" Overall height: 21mm/0.83" Package Includes: 1 Pair Sofa Armrest Covers 1 Box of 20 Twist Pins (sofa armrest cover Only, do NOT include sofa and slipcover) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.