amazon best seller travel backpack Basics Backpack,Carry-On with Laptop Compartment, 1.55 cu. ft. Capacity,Expandable for 10% Extra Space,Convertible & Shoulder Bag,Multiple Pockets,13.8"W x 21.5"H x 9.5"D, Black Installation Kit Options::16 Ft over300 Something like the Osprey

amazon best seller travel backpack Basics Backpack,Carry-On with Laptop Compartment, 1.55 cu. ft. Capacity,Expandable for 10% Extra Space,Convertible & Shoulder Bag,Multiple Pockets,13.8"W x 21.5"H x 9.5"D, Black Installation Kit Options::16 Ft over300 Something like the Osprey

Something like the Osprey FlapJill 21L : r/ManyBaggers

So look, if you need the absolute cheapest piece of fabric to surround your clothes and possibly fold into a traveling garment bag … this is the one

over300

Installation Kit Options::16 Ft

In my embarrassingly large collection of daypacks the Shape Charge is the clear winner and I use it almost excessively for nearly everything