Jenin Home Fashions Set of 2 - Foam Backing Jacquard Blackout Panels 40&rdquo; x 84" (Blue) 100% polyester Save energy, be fashionable with this casual tailored window panel pair Panels feature 6 grommets in each panel to accommodate either a standard or decorative drapery rod In summer or in hot climate, thermal panels help keep the cool air in and the hot air out by blocking the sun heat coming through the windows; In winter or in colder climate Black-out design keeps light out- blocks out 99-percent of light Durable, long lasting, 100% Polyester