Travel vouchers are prepaid certificates that can be used to purchase travel-related services, such as flights, hotel stays, or car rentals. They are often issued by airlines, travel agencies, or hotels as a form of compensation or promotion. Travelers can redeem these vouchers for a specific value, making them a convenient option for planning future trips. These vouchers typically have expiration dates and may come with certain restrictions, such as blackout dates or limited availability. It's important for travelers to read the terms and conditions associated with their travel vouchers to ensure they can use them effectively and avoid any unexpected issues.