This pairing of a blue crew-neck sweater and blue ripped skinny jeans is on the casual side yet it's also sharp and razor-sharp. Why not introduce a pair of low top sneakers to the mix for a sense of refinement? This combination is the definition of perfect for when temps are falling and fall is in the air. Those who are curious how to rock modern off-duty outfits well into your 30s, this getup should answer your question.