Serious about coin collecting? Then you know proper storage is everything - and these 50 adjustable acrylic coin cases are exactly what your collection deserves. Made from transparent, durable thickened plastic material, these cases offer serious protection while still showing off your coins beautifully. Each case comes with sponge inserts that cushion your coins, preventing scratches and damage from movement. The adjustable design is genius - with five different inner diameter sizes (20mm, 25mm, 30mm, 35mm, and 40mm), you can customize the fit for coins of various sizes. The snap holder mechanism makes inserting and removing coins super easy, and the secure rounded corner design keeps everything safe during handling and transport. These aren't just functional - they're also great for display. The crystal-clear acrylic lets you admire both sides of your coins without ever opening the case. Perfect for everything from common coins to valuable silver dollars, these cases provide anti-slip, dust-proof, and anti-oxidation protection that will keep your collection in pristine condition for years. Whether you're organizing your personal collection, preparing coins for award ceremonies, setting up business gifts, or creating exhibition displays, these cases have you covered. The package includes 50 coin holders and 50 foam washers of different sizes, giving you everything you need to properly protect and organize your entire collection. Definitely a must-have for any serious numismatist!