The bw international type 500 case is ideal for a hard drive usb sticks memory cards digital cameras cell phones etc the case shell is made of polypropylene pp certified with the stanag 4280 def stan 81 41 and ata 300 standards and features an automatic air pressure compensation valve it is strong dustproof waterproof ip67 certified and temperature resistant from 30c up to 80c cases are stackable and there are two eyelets for padlocks 45mm the interior is fitted with