| RefrigiWear Wool Watch Cap | Black | Ragg Wool/Acrylic | One-Size. RefrigiWear Headwear | The classic way to avoid brain freeze. Made from a wool blend, which provides natural insulation and wicking, the RefrigiWear® Watch Cap is stylish head and ear protection against the cold. 70% Merino wool / 30% acrylic liner for comfort RefrigiWear Wool Watch Cap | Black | Ragg Wool/Acrylic | One-Size... - RefrigiWear Wool Watch Cap | Black | Ragg Wool/Acrylic | One-Size. |