Cindy&Will A4 Office Stationary Double-clip Document/File/ Folder/Data Paper Clipboards with Bandage,Blue by AUCH The cover is made of high quality PP, water resistant, can protect your file well Clamps are made of high-quality stainless steel, not rusty, more durable Cardboard material,Durable Full stretch bandage can be used to hang pen Multifunctional folder to store a variety of instruments