Got these clear plastic folders to help me get more organized with various documents. Upon opening the folders had a weird residue look seemingly on the surface. I thought maybe it might’ve been some mold or mildew from excessive heat or humidity in storage or transit so I washed it with dawn and rinsed it in an attempt to remove the visual residue but to no effect. I just happen to have very clean but very dirty looking folders (not to mention the blueish tinge that all the folders have before and after washing.) I know these will probably be very sturdy and likely hold up well to wear and tear but for me looking nice and presentable is part of its intended function for me and they’re going to be a source of frustration and disappointment every time I look at this product in its present state. I will be returning these.