THE THERMAL EXO DUAL-LAYER BALACLAVA FEATURES FABRIC LAYERING TECHNOLOGY THAT HARNESSES SOLAR RAYS FROM THE SUN TO AMPLIFYING THE WARMING EFFECT OF THE MATERIAL UP TO 15°F (10°C). THIS FUNCTIONAL, FORM-FITTING BALACLAVA PROVIDES DUAL LAYER COMFORT AND PROTECTION FROM THE EXTREME WEATHER CONDITIONS, OR CAN BE WORN WITH THE OUTER LAYER DOWN EXPOSING THE BREATHABLE MESH LAYER WHEN LESS INSULATION IS REQUIRED.