Material - Aluminum Stash-Can for earplugs easy to store and carry around with the keychain, can be clipped easily to key chains, handbags, golf bags, belt loops or purse. Waterproof rubber seal ensures their protection from moisture, dust, and debris. | Light weight - The keychain can also be used as a small but pleasant carrying case thanks to its convenient shape and lightness. The olive shape and the hanger allows the travel box to be attached to every keyring as keychain. | 100% Waterproof Design - This earplugs hard container is airtight and watertight, the O-ring seal ensure 100% waterproof . No need to worry about accidental falls. It's perfect to store earplugs, emergency medicine or small items. | Multi-Purpose Using - You can also store herb, medicines, pills, first aid, spice, candies, cosmetics, gels, creams, jewelry, ear buds, ear plugs, coins etc in this oval shape airtight storage casing box. Available in ten different popular colors. | 100% Money-back Guarantee - Earasers products meet top standards to ensure durability in challenging outdoor conditions. If a product doesn't function properly, contact user services, and we will repair or exchange it for free if it fails to meet the standard.