A new travel trend called "flying naked," which involves traveling without any baggage or carry-on items, is growing in popularity. While ultra-light travel isn't a new idea, people are talking about it more now because of frustrations over rising airline baggage fees, which cost passengers around $7-billion last year in the U.S. alone. Some travelers have tried creative hacks like wearing multiple layers of clothing or using pillowcases to avoid fees, but these methods have been known to backfire. Despite its appeal for saving money, this minimalist approach poses practical challenges, especially for longer trips.