This transparent pocket is mainly designed for children. It is easy to use, just put the worksheet into it and begin to write. Made of PVC, it is and washable, but we don’t suggest machine wash. Easy to wipe the oil ink, can be used repeatedly. Feature - ColorAssorted Color - Perfect accessories: Matching crayons and study forms come with the package. Learning tables include additions, subtractions, multiplications, additions, graphics, colors, weekly plans, and more to help parents provide better home education. - Assisted education: Dry erase pockets can be filled many times without changing paper. The same type of questions can be practiced repeatedly, not only to help children to remember, but also to help children practice calligraphy and writing skills. - Office assistants: Office workers no longer need to work forms repeatedly, which saves paper and . - The pockets are clear on both sides, can insert templates or worksheets that are specific to be done. - Warm Tip: Dear buyer, Due to lighting effect,monitor’s brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand! Thank you! Package list: 10 Bags 10 x Pens