Leather and biker jackets are surprisingly breatheable in warmer months but will always find their true home in the fall. There's the temptation to wear a leather jacket undone with a graphic or plain white T-shirt underneath, but wearing them with a crewneck sweatshirt and an oxford shrit is just as classic. You'll have on three different fabrics that all stand out in their own way and work together to produce enough heat to make it through the end of the year.