Approved By The Tsa: The Luggage Lock Is Approved. By Travel Sentry, Allowing Security Personnel To Transport To Use The Key; Main Official To Unlock Your Luggage For A Security Inspection. If Your Baggage Has Been Opened By This Lock, When You Collect Your Luggage At The Airport, The Red Light On The Top Will Light Up To Let You Know. To Use: It Is Very Easy To Use. Set To Using The Flip And Adjust Buttons At The Bottom. The High Contrast Large White Numbers On Black Wheels Make It Easy To Read. It Is A Lock With; Easy-To-Use Combination Use, Suitable For Young And Old People.Safe And Solid: The Lock With Tsa Password To 4-Digit Resettable Allows You To Set Your Own Password, With 10,000 Options. The Sliding Function Is Advanced And Unique Among Tsa Locks On The Market, And It Is Very Resistant To Technical And Violent Unlocking.Flexible Cable Design: The Flexible Cable (4 Mm) Passes To; Through All Closures Standard Size Zipper On Suitcases, Backpacks Back, Briefcase, Etc. With An Overall Length Of 5.5 Inches, The Reinforced Cable Can Be Connected To 2 To 3 Sets Of Zippers; Slide To; At A Time To Secure The Entire Suitcase Or Bag. It'S Also The Perfect Locker Lock For Gyms, Schools, Drawers, Etc.If You Have Any Questions About Our Approved Cable Lock. By The Tsa, Please Contact Us Immediately. We Are Ready To Provide You With 24/7 Customer Service.