For something on the casually cool side, consider this pairing of a black cardigan and black chinos. Play down the casualness of this outfit by wearing a pair of black leather chelsea boots. As you're approaching your 30s, you probably want to start dressing like an adult. In this case, ensembles like this are perfect as inspiration.
Pair a black cardigan with grey chinos if you want to look casually cool without making too much effort. Dial up the dressiness of this look a bit by rounding off with a pair of black leather chelsea boots. This outfit shows that going from your 20s to your 30s is no reason to stop dressing casually.
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