Mygreen Waterproof Stylish First Aid Container Pill Case / Medical Alert with Key Chain Interior Dimension is 0.99 in and 2.76 in length including the top&lt; Product surface anodic oxidation, waterproof wear-resisting and air tight. Lightweight yet practically indestructible and made of metal Stainless metal outside, which is 100% health Cover can screw up, sealing and waterproofing, inside very clean, can pack emergency pills, commonly used tablets, used or hang, convenient use.