Some travelers choose a laptop to fit their bag; others need the bag to fit a computer they already depend on. The Targus Drifter II TSB239US belongs in the second search. This black-and-gray version is listed for laptops up to 17 inches and describes water-resistant material, making exact device fit the natural first buying question.
Match the model number before the measurements
Drifter II listings can appear beside other Targus backpacks with different size claims. Use TSB239US to keep the comparison on the 17-inch version, especially when moving between retailer pages or reading older reviews.
Then compare your computer's external measurements with the usable laptop space. A workstation with a thick chassis can behave differently from a thin laptop carrying the same screen-size label. Include any sleeve you plan to keep around it.
Do the same exercise for the power supply. Large-laptop travel often involves a substantial charging brick, and a bag that holds the computer without its essential accessories has not solved the real carrying problem.
Keep the travel brief focused
The Drifter II is worth considering as a dedicated equipment bag for work, study, or visits where the computer must come along. If most clothing travels separately, you can judge the backpack by how it handles the work kit throughout the day.
Water-resistant material is useful information, but it does not establish sealed seams or a fully waterproof computer compartment. Plan a separate dry barrier for sustained rain or a journey with a realistic chance of wet exposure.
Choose this version when the larger laptop is central to your trip and the confirmed compartment fit works. If your machine is compact, compare smaller packs as well; carrying a large-computer bag by habit can leave you managing unnecessary bulk.
