These letter size hanging folders are perfect for organizing all your paperwork; from your current bills your child's daycare receipts to your mass-grouping of coupons and yearly tax information. They are easy to label(if you're not happy with their placement you can easily shift them around) and help incredibly with organizing your paper-trail of a life. As far as protecting your documents they are not sealed all the way around so light air and possibly dust CAN get to them. They are great for regular type paperwork. I am very happy over all with this particular product and would recommend it to anyone who needs help organizing themselves within their file cabinets.