Lightweight, expandable 8-wheel upright gives you ultimate control while rolling and is ideal for a short business trip or a long weekend the dual-caster construction adds stability and provides 360 degrees of movement with zero weight-in-hand, making it easy to navigate tight spaces like airplane aisles a travel sentry approved lock is include to secure belongings and allows us airport security screeners to open the lock without destroying it and relock it after inspection backed by our carry with confidence warranty which guarantees the product to be free of defects in materials and craftsmanship and covers damage caused by a third party for the life of the bag