STRETCHABLE FABRIC92% polyester and 8% spandex make our sofa covers more stretchable and durable, ensuring both good function and comfort. There are also various adorable colors available for your choice to decorate your sofa. APPLICABLE SIZE(approx.) 1-seater Armchair Cover for 90-140cm/35-55inch length sofa, Cover 2 seater sofa cover for sofa length 145-185cm/57-70inch, 3 seater sofa cover for sofa length 185-230cm/72-90inch, 4 seater sofa cover for sofa length 235-300 cm / 92-118 inch. NON-SLIP DESIGNOur 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. Besides, 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 CLEANSofa Protector's unique fabric allows for quick and easy removal. pet hair easily. And the Stretch Sofa Protectors can be machine washed, which is simple and convenient. According to the installation instructions, it won't take you long to install the sofa cover.