Ideal for the nursery and shift workers - for use at home or away. A simple, inexpensive way to darken rooms. These blinds fit most windows and are easy and safe to use. You can put them up in less than 10 seconds! No size adjustments necessary. No pulleys, ropes or complicated mechanisms, simply stick the sucker to the middle of any window and pull the cord to secure in place -- easy! Use Lights Out Blinds instead of blackout curtains in the nursery, kids' room, hotel room, temporary accommodation.