One part shirt and one part jacket, shirt jackets—we'll call these shackets to save time (peep the 1:49 mark)—are easy to wear in-between seasons. Made of wool, nylon, or canvas, these heavier shirts can be worn by themselves or as a layering piece during colder temperatures. Our favorite brands from Pendelton to Norse Projects all have a version of this piece, so cop at least one of The Best Shirt Jackets Available Now