This long-sleeve turtleneck features a GORE WINDSTOPPER insert on the front, sleeves, and shoulders to block wind and retain warmth. The extra-long back prevents riding up and protects against spray. Flat-lock seams minimize friction and chafing. The thermo-stretch fabric offers optimal mobility. A 1/4 zip with a semi-lock slider and under flap allows airflow adjustment. The close-fitting collar helps retain body heat.