Super waterproof performance, completely sealed, the best place to store pills or other medications, keep dry. Rubber O-ring seal makes the seal waterproof and moisture-proof, ensuring the safety of medication. Our company's products are strictly quality tested. If you encounter any problems when using this product, please for replacement or refund. Please check the specifications before placing an order. Food grade aluminum alloy material. Super durable and sturdy, safe to store pills or any type of medication. No need to worry about dropping or bumping during daily activities or sports activities. Great for outdoor sports, camping, hiking, etc. It is lightweight and can be easily attached to belt loops, handbags, golf bags, or used as a zipper pull on coats or jackets. The pill holder keychain can not only save your daily medication, but also place names, contact information or pill allergy history to store your notes, earplugs, toothpicks, spices or other things you want to hide and protect in case of emergency.