When you're fighting the elements on your road bike, you want to minimize any potential resistance. And Flare considered that when they created this wind de resistance (said in a fancy French accent). Silicone grippers and pockets in all the right places mean you can focus on every pedal stroke and not on your clothes.
This is a high-performance jersey. If you have a more muscular physique you may want to go a size up as this jersey is designed to fit tight to your body.