Sisun 3.5 inch Anti-Static HDD Storage Protection Case, 3.5" Hard Drive Protective Case - HDD Protector Box Grey/Purple/Yellow/Blue/Green Stylish, portable and ingenious design, high quality plastic masterial injection molding, thicker and stronger for professional satifaction. Built-in anti-vibration and anti-static cushioning mat for maximum HDD protection, Shockproof, waterproof, anti-static and dustproof, ideal solution for 3.5 inch hard drive protection. Strong snap lock and reinforced internal and external rib design design, easy stacking with not sliding. With marking label on the front of the box for convenient HDD library management .