Listings advertise noise reduction ranging from about 25% up to 40% (examples include up to 25%, up to 30%, up to 35%, and up to 40%).
Materials shown include 100% polyester (including microfiber) and blends such as 80% recycled polyester with 20% cotton.
Listings use phrases like "noise reduction," "noise reducing," or "reduce outside noise." Several panels include laboratory-tested noise reductions reported across the results, ranging from about 25% up to 40%.
In addition to noise reduction, many panels advertise energy efficiency and thermal insulation (to help keep out heat or cold), blackout or room-darkening light control, UV protection, and some note material certifications or recycled-fiber claims.
Widths and lengths vary across the results; widths shown range from about 26 inches to 52 inches, and lengths range from about 63 inches up to 108 inches.
Light control ranges from room-darkening to full blackout; several panels are described as blackout, and a number state laboratory-tested 100% light blocking while others are labeled room-darkening.