What is Zip type & lock?
Chain zip vs coil zip, and TSA locks.
Short answer
TSA locks matter for US travel, less elsewhere.
Zip type & lock when buying a luggage & backpacks
Chain zip vs coil zip, and TSA locks.
Why it matters: Coil zips can be popped open with a pen; chain zips are more secure.
Look for: TSA locks matter for US travel, less elsewhere.
Full Luggage & Backpacks buying guide