Size of Deep Seat Cushions: The patio seat cushions set includes three bottom seat cushions (22 W x 22 D x 4 T) and three back cushions (22 W x 19 H x 6 T). The deep seat patio cushions are designed specifically to fit outdoor chair cushions like outdoor deep seat cushions or loveseat cushions for outdoor furniture. With dimensions that perfectly complement most outdoor patio furniture, but please ensure the best fit by measuring your furniture beforehand. Fade-Resistant Soft Fabric for Patio Cushions: The outdoor cushions for patio furniture are crafted with polyester fabric, offering exceptional water resistance, colorfastness, and a smooth texture. Designed to withstand the elements, these waterproof patio chair cushions stay vibrant and fade-resistant for up to three years. However, to further extend the life of the deep seat cushions for outdoor furniture, it is recommend to store or cover them during harsh weather.