Shipped via Yu-Packet Post Mini for peace of mind. Made with two layers to keep the price down. Uses strong leather. Brown is approximately 1.2mm thick cowhide velour. Black is approximately 1.2mm thick cowhide velour. Becomes softer and more comfortable in your hand the more you use it. Leather characteristics: Cowhide velour Durable and soft because it has a grain surface, like regular cowhide. Size: Length: Approximately 19 cm Width: Approximately 14.5 cm Please note that there may be color unevenness and scratches due to the use of scraps to keep the price down. The product is new and has been pre-washed, so there are no noticeable stains.