The Plugable USB Snap Band integrates a hidden flash drive in the band, so all your important files are right on your wrist. Fun, bright designs. Easy to use. Durable silicon construction, comfortable and easy to clean. Durable thin metal core snaps easily and quickly around wrist. Standard USB connector for flash drive access. Works with any version of Windows, Mac, Linux or other systems supporting USB flash memory storage. Drive is pre-formatted with FAT32 file system, 7.5GB usable space.