For a look that's super simple but can be flaunted in a ton of different ways, pair a turtleneck with a navy denim shirt.
Navy Denim Shirt with Turtleneck Casual Warm Weather Outfits For Men
You'll be surprised at how easy it is for any gentleman to get dressed this way. Just a turtleneck combined with a navy denim shirt. Opt for a pair of mint athletic shoes to keep the look fresh.