Is your World Cage a secret? Do you want your secret kept? Use these travel and metal detector friendly plastic seals in place of your padlock anywhere you might need to go through a metal detector - TSA, Courthouse, Amusement Parks, Museums, Sporting Events, or Concerts. Your secret is safe with Sexy Fun World. One Time Use. Metal Detector Safe. Individually Numbered. Quieter and less likely to click against your cage. Lighter Weight than your padlock. For use with most popular Male Chastity Devices in place of a padlock and key. Instructions for use: Place Travel Lock through the Lock Pin in place of the padlock. Click closed. Write down the number on the front of Lock. The number is now your key. If he comes home with a different number, he has some explaining to do. To remove cut Plastic Lock. The Locks are one-time use.