Convertible Carry-On Duffel Bag with Cross-Body & Integration Features

Travelers often carry multiple specialized bags (e.g., camera bag, large backpack) and need a flexible solution for their carry-on. A duffel bag that specifically addresses the challenge of carrying multiple bags comfortably, featuring convertible carry options (cross-body strap) and smart integration with other luggage (e.g., luggage pass-through or attachment points for a personal item), all within a budget-friendly price point ($150 or lower), would fill a significant gap.