Used for one season. Washed. I think it's relatively clean, but there may be some fine dust. Please refrain from purchasing if you are sensitive to such things. Please check the size in the images. When shipping, I will compress it in a ziplock bag, so please understand this before purchasing. The following is quoted from Amazon: Brand: Hiaksedt Material: Polyester + Spandex. Color: Black Style: Baby bed cover + pocket Shape: Rectangular Hiaksedt Baby Bed Blackout Cover, Blackout Effect, 90% Blackout, for Babies, for Napping Stretchy, elastic fabric.