Taking inspiration from emergency space blankets, the Hot Thought™ thermal reflective lining captures and retains your own body heat while wicking moisture and promoting interior airflow. Underarm vents zip open to further disperse excess heat, with 2-way zipper pulls that allow you to customize the amount of ventilation. An Omni-Tech™ microporous membrane combines with full seam sealing to create a waterproof barrier that's still highly breathable. Featuring a flattering cut and sublime fabric that has a lovely, sleek hand, the Hot Thought™ is a pleasure to wear. Velcro and elastic adjustability at cuff tabs delivers supreme customization capability, and a Velcro-closing interior pocket provides secure storage for your essentials without adding weight.