[Pocket size] Light weight and handy, very convenient to bring with. | [Special design] Metal design with 8 slot for SD card and 8 slot for Micro SD cards, small size, big capacity. | [Good protection to your cards] Dedicate tooling, with good material and nice closure, makes it shock resistant, water-resistance(cannot immerse into the water). | [Durable] High quality aluminum material, durable and have a long life span. | [ Dustproof, full protection,Water resistant seal] This SD cards holder can protect your cards from destroying, missing. It can protect your cards from drip water, but cannot be used in water and in the rain. Please take care of this before purchasing.