I purchased this last year and used it for about 3 months, but I'm selling it because I switched to a clear type. From the time of purchase, there were two black spots about 30cm from the bottom, but I don't think it will be noticeable since it's used inside the curtains. I threw away the packaging, so it will be folded and shipped simply with the hooks attached. Transparent curtain liners with heat insulation effect, size 150cm x 225cm, set of 2. - Size: 150cm x 225cm - Quantity: Set of 2 - Application: Heat insulating curtain liner Thank you for looking.