Which men's jeans are the most versatile? Men's blue slim fit jeans from River Island. If you don't have a pair of these outfit-makers in your wardrobe, your denim collection is missing a key piece. A universal style for everybody and every occasion, slim cut jeans are roomier than skinny denim but still with a defined silhouette. Men's blue slim fit jeans work the best for daytime occasions, casual office dress codes and weekend plans, so stock up on a few pairs in your denim arsenal for those last-minute park and then pub plans. Want to elevate them for smarter occasions? Throw on a crisp Oxford shirt and loafers. Not to mention, they're now crafted from responsibly sourced cotton for a super soft and earth-kind finish, the style options are endless.