Want to infuse your wardrobe with some casual menswear style? Consider pairing a navy blazer with jeans. Want to go all out in the footwear department? Complete this ensemble with a pair of brown suede chelsea boots. During the colder months, when warmth is paramount, it can be easy to settle for a less-than-stylish ensemble. This ensemble, however, is a striking illustration that you totally can stay cozy and remain stylish at the same time during the colder months. And if we're talking casual fashion for gents in their thirties, this getup looks nice on most gents.