【Perfect Fit】Our elastic chair cover fits most office swivel chairs, swivel chairs, computer chairs and armrests, dining chairs, etc. M: Back Height: (58-68) cm; Back Width: (42-55) cm. L: Back Height: (70-80) cm; Back Width: (45-58) cm, please refer to the product size chart. Then measure your chair before purchasing to ensure the best fit. 【Super Stretchy】Our chair cover is made of durable high spandex polyester fabric, soft, rich, comfortable and wrinkle-free. These fitted seat covers are designed to fit a wide range of chair sizes and styles. 【Perfect Chair Protector】Elastic chair covers protect your chair from stains, dirt and pet damage while refreshing furniture to suit your changing style. Office chair covers are perfect for families with children, dogs and cats and give your chair a new life.