The "25 50 100 200 Premium 7" coloured card sleeves are designed to provide a unique and professional touch to your correspondence while also protecting your cards. With a wide range of vibrant colors to choose from, you can find the perfect sleeve for each occasion. These sleeves are made with premium quality materials, ensuring durability and reliability. They are also easy to use, with no adhesive or heat sealing required. Simply insert your card, twist the locks closed, and you're good to go. Say goodbye to wrinkled or damaged cards, and hello to a more organized and professional correspondence experience.