A 15-inch MacBook Air combines a larger screen with a relatively slim computer body, which means buyers should not assume they need a bulky 17-inch laptop backpack. The best bag gives the computer a measured fit, enough structure to protect a wider chassis and only the additional capacity needed for work, college or travel.Quick Answer: Measure the MacBook Air with its protective case and...

A 13-inch MacBook Air makes it possible to use a slimmer and lighter laptop backpack than many larger computers require. The risk is choosing a bag that is oversized around the device or so minimal that it provides little bottom protection. The best backpack uses the Air’s compact size to reduce bulk without sacrificing secure carry.Quick Answer: Measure the MacBook Air with any case...

A 16-inch MacBook Pro requires more backpack structure than a smaller ultraportable because the computer occupies more back-panel area and adds meaningful weight. The best backpack should protect the device without forcing the user into an oversized 17-inch or travel bag unless the rest of the load actually needs that capacity.Quick Answer: Measure the 16-inch MacBook Pro with any protective shell or sleeve, then...