The Assos Spring/Neck Foil is a lightly insulated layer to keep your neck and face warm on the cooler days of the spring and fall. It has triangular side panels which more naturally form to the contours of the face and neck of the user compared to the typical tube shape. A seamless construction keeps the fabric feeling comfortable against some of the most sensitive skin on the body. Polypropylene fibers were strategically chosen for this product to evaporate moisture and increase breathability while remaining properly insulated. The Assos Spring/Fall Neck Foil is a great addition to your cool weather riding kit.