The protective cover is 95% made of sturdy plastic, the remaining 5% are divided into rubber and a kind of foam. This prevents foam that the hard drive inside can get scratches, etc., that is, they protect and so there is a foam pad on the lid and the bottom of the sleeve. The rubber protection located on the edge and will later falsified / enclosed by the lid and the lower part. This also prevents dirt and moisture from entering the case.
I go to my friends, so I take off and replace my hard drive with at data. To avoid having to accept the hard disk from the case, this has an opening at the bottom, through the normal USB cable Easily fits through. This is simply connected to the hard drive and I need to remove them not always. This opening is later, if no more cable passes, sealed by a rubber flap again.
The rubber coating which upper and lower part closes to prevent the ingress of moisture keeps what it promises. The private test I have the locked case with a water mister sprayed inside I put a pulp handkerchief for security reasons I have chosen this cloth my hard drive, because you can never know. After spraying and open the protective cover has managed no moisture on the rubber edge, the pulp tissue was completely dry.
Also, the closure (here a click lock) has been opened and closed by me several times, that opens and closes the envelope even when several attempts still problems. This protective cover is ever better than my previous. The material here is noticeably thicker and robust, even when processing there by my side nothing negative to say. The protective sleeve can be determined by Multiple Opening / Closing still good affairs gumming holds tight and do not change when it gets warmer so I could see when I finally had the protective cover in the vehicle and thanks to the nice weather but inside quite fast was warm. Recommended from my side.