8mm black opaque vinyl which clings to any smooth glass or plastic surface by static electricity. Uses no adhesives, leaves no residue, can be reused hundreds of times. 36" x 48" sheet, 12 square feet.
Reviewed by 1 customers
It would have been helpful to know that doulbe thickness to be effective and I would have ordered more. It did not seal too well on the edges so what I hoped would be a simple way to make a light proof room at a house I rent so needed it to be non marking only did half the job. Probably ok for something without direct sunlight and in small areas.