Board Thread:Suggestions/@comment-24108228-20140406165259/@comment-24108228-20140418200119

A woven vest is an insulating item of clothing that protects your heart (and therefore blood) from the cold or heat, keeping your internal temperature a stable and optimised amount for maximum speed while running.

There, an explanation. Now you realism freaks can be more content with an item of clothing helping you run faster.