SUSTAINABLE MATERIAL: Made of zinc alloy and able to withstand the rigors of baggage handling.The only way to open the lock is with the special key or by knowing the combination. MULTI-PURPOSE: This luggage lock can be used to secure a wide variety of items, including to lock your luggage, suitcase, toolbox, golf bag, backpack, gym lock, etc. Flexible Cable - The flexible and durable cable of these luggage locks can handle situations that ordinary locks cannot fit. It can even go through all standard zippers and hardcore keyholes with ease. Easy to use: The suit can be reset as often as you like. The original combination number is 0-0-0, but can easily be changed to any 3-digit number you want.