Using one hand, gently lift top of ear up as shown and to expand ear canal. With other hand, use stem to guide ear plug into a comfortable position. If necessary, adjust ear plug for enhanced sealing performance. Cleaning: Wash with mild soap and water. Dry thoroughly before re-insertion into ear. No diving. Not recommended for depths over 5 feet. Store ear plugs in keychain case to keep clean. Note: If ear plugs become cut, cracked or unpliable, replace with a new Hearos ear plug. Not intended for sleeping or any applications where pressure could be applied against stem.