PREMIUM MATERIALS: Our pill box is made of high quality aluminum alloy, which is durable and well made. They last a long time thanks to quality materials and fine craftsmanship. Waterproof and moisture resistant: These pill boxes have a small rubber seal to protect the pills and medicine inside from moisture, a user-friendly and thoughtful design. Dimensions: 1.9" x 0.7"/48mm x 17mm (height*diameter). Lightweight and portable. Its size is perfect for travel, outdoors or emergencies. Space saving, ideal for fishing trips, cycling and camping. ERGONOMIC DESIGN: This key ring can be easily attached to a purse, key chain, belt loop, golf bag or used as a pull tab on a coat or jacket. It is very convenient to carry. Recognizable colors: There are 10 medicine boxes in the package, with 9 colors such as red, blue, silver, champagne, black, purple, etc. Different colors can distinguish different drugs. Having our colorful pill box is no longer a matter of being confused about different drugs.