For coin and bill collectors, these banknote sleeves are absolute essentials! Measuring 158x75mm (about 6 1/4 x 3 inches), they're perfect for protecting your valuable paper currency while keeping it visible and accessible. Made from durable rigid PVC, these sleeves are sealed on three sides with just the top open, making it super easy to slide bills in and out without creasing or damaging them. The crystal-clear material lets you see both sides of your banknotes perfectly, which is great for displaying your collection or just keeping things organized. Each pack contains 50 sleeves, so you've got plenty to organize an entire collection or just protect your most valuable notes. Whether you're a serious numismatist with rare bills or just someone who wants to preserve special currency from travels, these sleeves provide professional-level protection. They're stiff enough to prevent bending but flexible enough for easy handling. I love that they're simple to use - no complicated folders or albums needed, just slip your bills in and they're protected from fingerprints, dust, and moisture. For the price, you're getting museum-quality protection that will keep your paper money in perfect condition for years to come. Every serious collector should have a supply of these on hand!