The WD Hardshell Drive Carrying Case is designed specifically for Western Digital USB drives, featuring a hard shell and soft interior to provide protection and storage. The black case is compact, measuring 5 x 3.78 x 1.04 inches, and lightweight at 4.2 ounces. It is waterproof, making it durable for travel and on-the-go use. The case is designed with a USB interface, perfect for connecting to a personal computer. This product is a practical and stylish way to carry your external hard drive safely and securely.