Waterproof and Comfortable: Our patio chair cushion replacement is made of waterproof fabric and filled with PP cotton,which is soft and comfortable,tear resistant and not easy to deform, can prevent some water or drinks and you can use it for a long time Anti Slip Ties: These waterproof patio seat cushions are designed with anti slip ties to hold them securely when you sit or rock, preventing any unwanted sliding or movement Size and Amount: Our outdoor chair cushions set of 2 are approx. 41.7x20.8x 3.9inches which can well fit most of your outdoor furniture, to cover the whole chair and provide a comfortable feeling Widely Applied: Our outdoor seat cushion with back is versatile to use, which can be applied for your patio chairs, lawn chairs, garden chairs, outdoor furniture, all weather chairs, as well as indoor rocking chairs, dining chairs ,and even you can use them as floor cushions at home Note: Our lawn furniture cushions are delivered in vacuum compressed package. Please patiently place it for 3-7 days, or put it in the dryer for 15 minutes to restore its original shape