These coin holders are made of thickening paper material, durable for use. It is light and durable, easy to access, and can bring convenience to your daily life. It can effectively protects the coins from slipping down, but they won't affect your . Features - Color: White. - Material: Paper. - Size: 3.50X3.50X0.01cm/ 1.38X1.38X0.004inch. - Suitable Size: 20.5mm; 25mm; 35mm; 40mm. - Adopted premium paper material, it provides the best protection for your coins. - Comes with different sizes of 20.5/25/35/40mm, which can hold most of the coin sizes on the market. - Just fold cardboard with coin inside, then seal with staples or tape, you can note coin details. - It can be used with , placed in coin box and coin books or coin albums, which - Great gift for coin collectors to store and protects his or her favorite coins. Package list: 800 x Coin Holders