Summer is here — but that’s no excuse to start dressing like a slovenly beach bum. From retro-cool Cuban-collared shirts to palm-print backpacks, here’s everything you need to upgrade your wardrobe as the mercury rises.

Beach life has gone high-designer. Get on board with these primo wares.

Petals are OK, guys, we promise.

Forget the Hamptons; newly opened Cuba is the It destination for the young and fabulous. So it should come as no surprise that the collared shirt characteristic of the Caribbean hot spot is the style to be seen in — and the smart-dressed man’s summer must-have. The notch-lapel short-sleeve number has resurfaced in bold prints that will be keeping men “cool” in more than one way in the coming heat waves.