Thermalogic "Allegra" patterned (curtains) Grommet Top Insulated Curtains shown with Thermalogic Grommet Top Insulated Curtain in Navy color, & white tab top curtains in center. ~ 3 sets of curtains!
DIY. Turn a wool blanket into an insulating curtain. Also blocks light. Wool blanket DIY into insulating window covering. *** added 10/3/15. Actual link: http://woodandfaulk.com/blogs/journal/15785157-army-surplus-curtain-diy-revisit
Insulating Curtains That Cut Heat Losses Through Windows by 50%