Saddle Pro ($295) is a new expandable laptop brief from one of our favorite bag companies, Booq. The company says Saddle Pro was “designed in collaboration” with some of Booq’s “most demanding customers.” It’s recommended for 13”-15” MacBooks, and our 13” MacBook Air fit comfortably. Saddle Pro’s exterior is mostly ballistic nylon with a water-repellent coating, though the zipper pullers…