A white horizontal striped crew-neck t-shirt and navy jeans are a smart look to keep in your closet. Complete your ensemble with brown leather casual boots to instantly spice up the ensemble. When it comes to dressing for in-between weather, nothing beats a neat ensemble that will keep you comfy and looking your best. Think it's hard for middle-aged gentlemen to perfect edgy off-duty outfits? This combination is a practical demonstration of otherwise.