Thermal, long-sleeve jerseys are an ideal layer to help resist the chill in the air of the changing seasons. The Gore Wear C3 Thermo Jersey's brushed fleece lining provides essential warmth as an exterior layer in chilly weather and adds insulation to a heavier winter jacket when the ground begins to freeze. Gore moves the chest zip-pocket to the rear on the main pocket panel and boosts reflective detailing in this updated version. The C3's active fit reduces wind-flap on breezy days and downhills and helps reduce bulk if the jersey does need to double as an under-layer for wintry, alpine descents.