When it's warm, who can be bothered with fuss and frills? Not us, nor Alexa Chung or Jessica Alba, who are taking a grounded approach to the mule for summer. And, it feels sooo right. This flat, pointed and backless slip-on is a metaphor for our summer state of mind: simple and modern. Casually drop the designer names Narciso Rodriguez and Tabitha Simmons into convos to sound all fancy. Plus: they take up like ZERO space in your luggage, so they are perfect to pack for your next vacay. Done.