High Quality Material: The office chair cover is made of 92% Polyester and 8% Spandex. Classic check jacquard fabric with high elasticity, features soft, non-slip, anti-wrinkle and washable. Super stretchy to fit most office chairs easily. Renew your old chair and protect your chair from dirt and scratches of pets.^ Updated Non Slip Protector: Except the elastic band, this new version added straps, making this stretchable chair seat covers easy to fix and anti-slip. Its great for square or round seat cushions chairs, dining chairs and more.^ Reference Chair Size: The office chair cover will fit computer chair with backrest width & height35-45 cm (14 - 17"), Cushion width & Length35-48 cm (14-19"). 1seat cover & 1backrest cover are included. Please measure the size of your chair..^ Easy Installation: The decorative computer office chair cover is easy to install. With the durable high stretch polyester and spandex fabric, the desk chair cover can be secured in place quickly by using the elastic edge, can fit the chair perfectly.^ Please Note: Only chair cover, no chair. Please carefully read the Size Guide we provided in the pictures, and measure your chair size to determine if it will work. The 2 piece office chair covers can be washed in cold water by hands and washing machine. No ironing needed. If you have any problem with these chair seat covers please feel free to contact us. ^