A crew-neck sweater and navy shorts are must-have menswear staples if you're piecing together an off-duty wardrobe that matches up to the highest style standards. If you want to feel a bit fancier now, complement this ensemble with loafers. This look is our idea of perfection for boiling hot days. Dressed like this, any gentleman over 50 is bound to put most 20-somethings to shame.