A white crew-neck t-shirt and beige jeans are absolute must-haves if you're figuring out an off-duty wardrobe that holds to the highest sartorial standards. Add white and navy leather low top sneakers to the equation et voila, the outfit is complete. Stick with this one if you're hunting for a solid summery ensemble. Those who wonder how to wear cool off-duty outfits as you pass the big 3-0, this combo should answer your question.