Size Of Best Suitable Chair Seat: : Seat cushion length: 14.919.5in(3850cm); Seat cushion width: 14.919.5in(3850cm); Seat cushion thickness: 12"(2.55cm). Please check the measurement guide in the item picture before order. HighDensity Fabric: : chair office seat covers made of 95% polyester and 5% spandex. Soft and comfortable offers breathable, yearround comfort. PU leather fabric makes your seat for chairs look new. Elastic Fabric For Easy application: : the chair seat covers offer an impressive stretch property allowing them to fit the chair seat well which can be removed and put back. Elastic band offers perfect fit and nonslip grip, 1 minute is enough to install our chair seat cover. No matter what material your chair is, our chair seat cover will fit like a glove. Easy To Clean: : Machinewashable design allows for easy care and cleaning, just machine wash it at 40. Well Protection: : 100% waterproof, protects your chair seat from unexpected stains, scratches and liquids will no longer be a problem. You can sweep crumbs off from the chair seat cover easily.