Thermal Blackout Soft Drapery Fabric, Color White,sold By the Yard

I can say that this certainly helps blackout a window, but it's only about 90% effective. You can still see light come *through* the fabric when hung in front of a house window. But, it does the job well enough for what we needed. Light, soft fabric so can wrap around something if you need it to.

The description says it is white. It is not white, it is gray. Therefore it is not useful.

Works really well for black out on our van. The material was difficult to work with, slides around a lot, and sags when u put it up on the van windows. I suppose if you just hang it like normal curtains it would work great!

Darkens the fabric as promised.