Bag Wrap, just one company that will sheath your luggage in cling film, with locations in airports all around Europe, states five: that it protects your luggage from damage, deters thieves, weather-proofs it, makes it easily identifiable, and reduces the risk of someone slipping illicit goods into your bag.

Taping or "wrapping" luggage in heavy-duty plastic film at the airport serves several protective and security purposes. Primarily, it acts as a deterrent against tampering and theft; a tightly wrapped bag makes it impossible for someone to quickly unzip a pocket or slip a hand inside without visibly destroying the seal. It also provides a shield against physical damage, preventing zippers from bursting, straps from snagging on conveyor belts, and the suitcase shell from getting scuffed or torn. Furthermore, it offers weather protection against rain on the tarmac and helps prevent the accidental "spillover" of liquids from other bags in the cargo hold. In some regions, wrapping is popular to prevent illegal substances from being planted in a traveler's bag. However, travelers should note that if security (like the TSA) needs to inspect the bag, they will cut the plastic open and are not required to re-wrap it, though many commercial wrapping services offer a "re-wrap guarantee" if you provide proof of a security inspection.