Soft Stretch Material - office chair covers are made of 95% polyester and 5% spandex fabric, soft and comfortable, durable and long lasting. High elastic fit to protect your chair from spills, stains and tearing perfectly. Function-over-Fashion - More than the function-over-fashion slipcovers that might come to mind, the chair covers are functional, beautiful and save you money by extending the life of your couch. Transform your old furniture to brand new. Easy Installation with Zipper - Zippers are designed on both chair back sides for facilitate fixation and using. You just need open both side zipper and slip on from office chair back, two ties under the bottom will keep it non slip. Perfect Fit - Our stretch office chair cover are one-size-fits-most. Always measure chair back width and back height before ordering. Easy to Care - Machine washable in cold water. Wash separately at gentle cycle. Using mild laundry detergent. Do not bleach. Size Chart: L Size: Chair Back's Height: 22.8-27inches, Chair Back's Width: 16.5-21.7inches, Chair Seat Length: 14.9-16.6inches, Chair Seat Width: 16.5-21.7inches. XL Size: Chair Back's Height: 27.5-31.5inches, Chair Back's Width: 17.7-22.9inches, Chair Seat Length: 17.7-23.7inches, Chair Seat Width: 17.8-22.9inches. Package Includes: 1 Piece Chair cover 2 Pieces Arm Covers Note: Please allow 1-3mm measuring deviation due to manual measurement. Due to the different monitor and light effect,the actual color of the item might be slightly different from the color showed on the pictures.Thank you! Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.