Features an innovative triple weave fabric construction to block out sunlight and harmful UV rays. Insulates against the heat and cold, saving you money & energy. Laboratory-tested innovative fabric construction that insulates against the cold. Made from 100% polyester, this flame-retardant piece features antique bronze-finished grommets up above that make it easy to hang it from a rod (not included). Plus, it's safe to go in the washing machine for a quick and convenient refresh. ** The darker colors are more effective in blocking out light and the lighter colors are less effective. ** White/Light colors are for room darkening.