These silicone hard drive protector sleeves provide a layer of cushion against shock and impact for either a 3.5 or 2.5 hard disk drive (HDD). They are a two piece design with the smaller piece removable to enable the HDD to be plugged into one of our HDD docking stations, and the larger piece stays on which keeps most of the HDD still protected. Supplied in a pack of two, one designed for a 3.5 HDD and the other designed for a 2.5 HDD. Dimensions 3.5 158x118x33 2.5 107x80x18