This is a form-fitting, flexible silicone hard drive enclosure that supports standard 2.5-inch SATA hard disk drive. The silicone enclosure measures 4.3 x 2.9 x 0.5 inches and weights 40g. This kind of lightweight, slip-resistant design allows you to conveniently take your HHD anywhere, and protect the hard drive from bumps to some extent. Most importantly, the drive enclosure comes with hard drive converter and USB connector. Now you can connect your standard 2.5-inch SATA drive with computer via USB port just like external hard drive.