Levi's Packable Blazer
While it isn't a blazer in the truest sense — you're not going to be wearing it to formal business meetings anytime soon — the Levi's Packable Blazer ($180) can certainly serve as the outer layer of an above-casual outfit in a pinch. Made from quilted nylon, this jacket is designed for travel, making it easy to stuff into a bag, backpack, or rucksack, and also features long sleeves, a regular fit, and side-flap pockets that make it just that much dressier than a standard rain jacket or hoodie. Available in a versatile liquorice colorway that should look good with nearly anything.