Spectra is engineered to be lightweight without sacrificing durability, constructed of 100-percent pure bayer polycarbonate, combines a dual trolley handle system and an eight wheel construction for superior maneuverability, the simplified interior contains y-shaped compression straps and a zippered mesh divider wall which allows you to fully utilize the available capacity, each spectra case has an integrated travel sentry approved luggage lock to secure your belongings and the swiss tracker bag tracking program which helps reunite you with your bags should they be lost, the access lock combination recovery program allows you to register your lock combination on victorinox.com and recover it if it is ever forgotten, the spectra collection is backed by our lifetime warranty which guarantees that the products be free from manufacturing defects in materials or workmanship for the life of the product