If you're looking for a safe and easy way to store your accessories like earrings, this Aluminum Storage Keychain is design with a waterproof and travel-friendly tube that can be stored in your bag. More importantly, it contains a screw-on-top and O-ring that is designed to keep smells and odors out. Our All-in-One can be used for easy cleaning and maintenance of the keychain's removable bottom and key ring cap. This product comes with 2 replace O-rings