256 GB Credit Card-Shaped USB 3.1 Flash Drive with USB-C and USB-A includes the following features :

• Metal credit-card size, ultra-thin 
• Capacity: 256 GB real usable capacity
• Offers dual interfaces (USB-C + USB-A)
• Standard: USB 3.1
• Flash memory: Samsung, Micron, or SK Hynix only
• Controller: USB 3.1 dual-interface

Material :

• Metal housing

Size closed :

• Length of 8.6 cm x Width of 5.4 cm