Sufficient Amount: package includes 18 pieces of sheet music page holders with 2 holes, double side available, enough to hold items, you can use them in office or school; Also you can share them with your partners and classmates Waterproof and : these music flip folders are made of PVC material, which are waterproof and tear , to keep your items from water and stains, smooth in and , serviceable to use, you can use them for a long time Easy to See: these flip folder window pages in translucent design provide convenience to distinguish items in the bag, you can quickly find what you need, with 2 holes, you can collect these flip holders together to make them easier to arrange Widely Fit: these music folders for sheet music can be applied to put your papers, files, music scores, photos, invoices, stamps, receipts or other important items in it, classifying your items and keeping them in tidy condition, helping you to store your items well Color: Black Material: PVC Package Contents: 18 x Flip Folder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.