PACKAGE INCLUDE: There are 10 or 20 pieces of clear report covers and 10 or 20 include blue,green,white, enough for you to collect and classify different documents more orderly.^ SHEET CAPACITY:These reusable and durable report covers with sliding bars can hold around 20 pieces of papers.The width of sliding bars is 5mm,won't slide off the clear report cover easily.^ FOR LETTER SIZE&A4:Length of sliding bar report covers is approx. 31 cm/ 12.2 inches, the width is 22 cm/ 8.2 inches,slightly bigger than A4 paper and US letter size(11 x 8.5 in). Clear plastic cover thickness is 14c,can protect reports from bends, surface moisture, and rips.^ Clear Front & Back COVER:Plastic report covers (5mil) featured by high quality Polypropylene material,show the top page clearly,High transparency,easy to find the required documents and information.^ WIDE USES: Clear report covers with sliding bars can be done as homework folder, presentation folder,file folder, also can be used for schools, home or work,can help display any presentation or report,look professional.