Soft elastic fabric:The dining chair seat cover is made of 85% polyester and 15% spandex, soft and elastic, comfortable to sit, and wrinkle-resistant and wear-resistant, which can block daily stains, dust, pets from hurting your chairs and repair your chairs quickly. Suitable chair size:Suitable chair cushion length is 15"-21, width is 15"-21", thickness is 1"-3". Please measure your chair cushion before purchase and refer to the measurement guide in the picture. Easy to install:The stretchable fabric makes the seat cover very snug and easy to install and remove, like putting on and taking off clothes. The elastic band and elastic band at the bottom ensure that the seat cover is firmly fixed and not slide easily. A wide range of uses:This dining chair cover fits most upholstered chairs. It can be used for daily furniture protection and decoration and for hotels, wedding parties, restaurants, pubs, and other places to give your furniture a new look. Machine washable:You can remove it and throw it in the washing machine for easy cleaning and low-temperature drying without bleaching and ironing.