The Calpak Luka Large Duffel Bag aims to strike the sweet spot, offering enough room for a four-day getaway without feeling oversized. The beloved Calpak duffel also features a trolley sleeve that slides over a rolling suitcase handle, helping you navigate airports with one less thing to carry. “I have used this bag at least 10x for weekend travel. Have used from overnight to a four night stay and it is the Mary Poppins of bags. Also have the mini Luka as a carryon and will be purchasing the packing cubes as well,” a traveler shared.