Thule Aion Travel Backpack 40L - Black Duffel Bags SmartSleeve™: fits over most upright

SmartSleeve™: fits over most upright luggage handles for hassle-free combination travel

Compliant with most airlines carry on requirements

The perfect front-pocket friendly

Trolly strap slides easily onto rolling luggage for smooth travels

Phone pocket for easy storage and access

Thule Aion Travel Backpack 40L - Black Duffel Bags SmartSleeve™: fits over most uprightFeatures: Removable TPU rolltop bag tucks away after use and allows you to store items without odor, dirt or moisture spreading to the rest the bag Compatible with the Thule Features: Removable TPU rolltop bag tucks away after use and allows you to store items without odor, dirt or moisture spreading to the rest the bag Compatible with the Thule Aion Sling Bag which doubles up as a supportive hip belt (sold separately) Zippered top pocket keeps small