STRETCHABLE FABRIC: 92% polyester and 8% spandex make our sofa covers more stretchable and durable, ensuring both good function and comfort. There are also different adorable colors available for your choice to decorate your sofa. GOOD FIT: You measure the length between one armrest and the other armrest to choose the right size sofa covers for your sofa. The recommended size is as follows: (approx.) 1 seater sofa cover for 70-125cm/27-50inch length sofa, 2 seater for 125-165cm/50-65inch length sofa, 3 seater for 165-205cm/65-80inch length sofa, 4 seater for 205-250cm/80-98inch length sofa. NON-SLIP DESIGN: Our sofa cover can cover the back of your sofa, providing full protection. There are non-slip foam cylinders in the package, which can be stuffed into the gap of the sofa to keep the slipcovers in place. Also, the straps of the sofa covers could be tied under the bottom of the sofa to prevent the cover from moving. EASY TO INSTALL AND CLEAN: Unique fabric makes hair removal quick and easy of animals. And the stretch sofa covers can be machine washed, which is simple and convenient. According to the installation instructions, it wont take you long to install the sofa cover. NOTE: 1 .the product is only a sofa cover, not including sofas or pillow covers. 2.Due to the light change and photography problem, the colors may vary slightly from the pictures and the actual product, but we try our best to make our items consistent with the photos.3.Machine washable unless 30 degrees Celsius.