Carry a laptop up to 15 inches in a 16 L backpack format for daily transport between a desk, classroom, and home. The STM BAGS Dux 16L Backpack pairs a stated 15-inch maximum screen size with a stated 16 L capacity, giving buyers two direct fit criteria before selecting a bag. The Retro variant identifies the finish named for this configuration. Users can evaluate a notebook and expected daily contents against two separate values. The 15-inch rating addresses the maximum supported screen size, while 16 L describes overall bag capacity. Treat both values as selection criteria: a device larger than 15 inches falls outside the stated fit, while the volume figure helps compare space requirements across Dux bag options. The backpack configuration supports hands-free carrying during commutes and movement around an office, campus, or site. STM-111-376P-05 identifies this Dux 16L Backpack in Retro. Select it when the carried computer fits within the 15-inch limit and a 16 L capacity aligns with the amount of gear being carried. Its distinguishing details are the stated laptop-size limit, the 16 L capacity designation, backpack form, and Retro finish. Those details separate this configuration from Dux options with different capacities, carrying formats, or finishes.