Our flash driver is made of metal. The size is 2.75"L*0.8" W. Two-in-one Design with Type-C and USB 2.0 connectors.USB 2.0 interface for higher speed and higher stability. You can choose 2G,4G,8G,16G,32G,64G, and 128 G. To avoid data loss or mechanical damage, do not power down your computer or unplug the flash disk during transfer. A custom logo is welcome!