<p>A head covering system comprising a concave head cover separated from the scalp that follows the contours of the scalp thereby to generate a narrow chamber adjacent the scalp such that headwind air particles adjacent the scalp are tunneled into and out of the narrow chamber for acceleration therewithin, wherein the narrow chamber comprises a wider forward portion and a narrower rear portion thereby to generate acceleration of headwind air particles by virtue of the Bernoulli effect.</p>
