Wide application: DIY your own unique coin collection album and also can be applied as an excellent gift for coin collection lovers. Specifications: Cover material: artificial leather Inside material: PVC Collection book size: approx. 15.2 x 11 x 1 cm/ 5.98 x 4.33 x 0.39 inch (L x W x T, unopened) Each grid size: approx. 3 x 3 cm/ 1.18 x 1.18 inch Warm notice: Not suitable for children under 3 years. Use under adult supervision. The item suits for 50p the size of the coins, if you want to collect larger size coin, please buy carefully.