This is Crisper, a synthetic paper from Toyobo for laser printers. It is a PET-based synthetic paper, so it can be used underwater. Thickness: 0.075mm (75μm) Number of sheets: 20 Color: White Material: Foamed PET Unlike Yupo, Crisper's base material is foamed PET, not polypropylene. Compared to Nisshinbo's Peach Coat, which is based on ordinary PET film, Crisper, which uses foamed PET, is characterized by its lightness relative to its thickness. *Please contact us if you require more than 20 sheets.