17.5" Foldable Laptop Carry-on Briefcase On Wheels, Under the Seat Personal Item Suitcase Compliant with Spirit, Frontier, American, Delta, Southwest and More. 18x14x8 inches (45x36x20 cm) - Walmart.com
Delta Personal Item Size Guide for Backpacks, Bags and More | Backpackies
Delta Airline Carry On Baggage Allowance and Baggage Fees 2022. LuggageToShip
6 Easy Ways to Avoid Delta Baggage Fees | FinanceBuzz
Delta Airlines Baggage Policy || Everything You Need to Know || Baggage Allowance - YouTube