You can follow the below instructions to do a lock reset. 1) When you first receive your luggage, the default combination should be 0-0-0. 2) If it's not, set to 0-0-0, and push the big button (slide towards the combination) to open your luggage. 3) To set your combination for the first time, use a safety pin and press on the small button between the lock slot and the dial down. It should have a "click". 4) Change/set to your desired combination, then push on the big button (slide towards the combination). 5) That's all, your new combination is set.