Go for a straightforward yet casually stylish choice by pairing a white and black gingham long sleeve shirt and navy chinos. And if you want to easily play down this outfit with one item, why not make tan leather sandals your footwear choice? No doubt, you're looking at a nice idea for a blazing hot warm weather afternoon. Off-duty ensembles for gentlemen in their 20s aren't actually that hard, as you can see here.