It's a highquality portable pill case keychain to take care of your important pills or small items so that you may take them with you with no worry of any omissions. You should fill the inner space of the 2 compartment pill case with cotton to hold the pills still.So that they don't crash each other into pieces. You can remove the middle compartment of the waterproof pill box keychain if it is too big for you. Specifications: Pill box Material:Stainless Steel Pill box Length: 59mm Pill box Weight: 27g Compartment Length: 20mm Compartment Inner dimension:11.1mm*25.4mm and 11.1mm*19mm Package includes: 1 x Pill box 1 x keychain 1 x 20mmkeyring 4 x Waterproof Oring If you have any questions, please feel to contact us.If you are not satisfied with our products, we will provide a full refund.