These maximum strength, large capacity R-Kive coloured transfer files are ideal for A4 and foolscap papers in folders. They are made of high quality corrugated board with two thicknesses for extra strength. Shipped flat packed they use a fastfold construction for quick and easy assembly. There are two large label areas on different sides for clear marking of the boxes contents. Take your office or household organisation to the next level by using these coloured transfer files to colour code your documents.