Frame A Coin's exceptional, high-grade plastic holders offer superior quality. These characteristics come from the fact that all sleeves are 125mm thick and all products have our proprietary heat-pressed seams, with clean and precise mitered joints. No adhesives are used in our products making your archives safe from reactions. Double pocket holders offer excellent clearness for any part of your collection with the convenience of quick identification when used with the paper inserts. Unplasticized- double pocket for valuable, frequently handled or delicate coins, or just that additional level of protection the rigid plastic double pocket offers the safer, more durable archival solution.