Co-ords are a huge menswear trend for Spring '15 and one of the best things about them is that you don't actually have to wear them together. Investing in a few pieces in complementary patterns and learning to pair them properly is something that separates the sartorial men from the boys and marks you out as a don of dressing. However, there's a skill to it, so watch our guy get it wrong before he gets it right below and never be in "does this go with this?" doubt again.