A charcoal horizontal striped crew-neck t-shirt and black skinny jeans are amazing menswear essentials that will integrate really well within your casual fashion mix. To bring a little fanciness to your getup, complement your ensemble with a pair of brown suede chelsea boots. This look is a viable pick when it comes to picking out a well-coordinated outfit for transitional weather. Perfect if you're on a mission for some incredibly inspiring 20-something casual style.