Size: 4.8*1.7cm/1.89*0.67 inch, convenient to carry with a little pills in itHigh Quanlity of Material: The pill holder is made of aluminum alloy, which is lightweight and sturdy, not easy to break down and can serve you long time. It is nontoxic, will not bring harms and allergies to you and keep your pills cleanPortable Design: The pill holder with keychain is easy to carry and can be hung on the key ring, put in trousers pocketWaterproof: Each pill holder has a silicone sealing ring , which makes the pill bottle airtight, moisture resistant and waterproof.Application: The pill holder is suitable for daily usage and traveling with medication. Patients and the elderly can be more at ease when using drugs