A humidor is a storage container designed specifically to store cigars and maintain the optimal level of humidity. It typically has an interior lined with Spanish cedar, which absorbs and maintains moisture while also providing some protection from insects. A humidor can come in various sizes, from small desktop models to large cabinets capable of storing hundreds of cigars.
On the other hand, a travel case is primarily used for transporting cigars rather than storing them long-term. Travel cases are generally smaller than humidors and may not have any form of internal lining or humidity control system. Instead, they provide basic protection for the cigars when travelling and may include features such as locks or airtight seals to help keep out dust or debris during transport.