To mark a bag as fragile, you should request a "Fragile" sticker at the check-in counter when you drop off your luggage. Most airlines provide these for free, and applying them to multiple sides of your suitcase ensures they are visible to baggage handlers. However, keep in mind that these stickers are not a legal guarantee of gentle handling; they are merely a visual cue. In 2026, many frequent travelers also use bright, neon-colored luggage tags or tape with "Fragile" text to make the warning even more obvious. For truly delicate items, some airlines offer "special handling" or a separate drop-off point, though this may come with an additional fee. Internally, you should "mark" your bag by packing it correctly: sandwiching fragile items in the center of the suitcase between soft layers like towels or bubble wrap to provide a physical buffer against the inevitable shocks of transit.