These are absolutely beautiful in my classroom! My classroom windows are HUGE and over 70 years old! These windows cover them nicely and keep the room a comfortable temperature.<br><br>I dim the lights and turn on lamps in the classroom often, and with the lights off the constellations shine and sparkle through the curtain. My students and guests that come to the room all love it! I teach space science, and these curtains are one small way to get the kids interested in the mystery of the stars &lt;3