During the harshest of winter weather, the seirus ultra clava is the perfect solution to fight off the cold, windy weather, the ultra clava is our warmest headwear and 100 percent windproof, this clava is made of weathershield tri-laminate fabric the same as our best selling all weather glove and will keep you fully protected from the cold winter weather, it will fit great with your goggles when you head outside this season, great for really cold days, ice fishing or driving your bass boat early in the morning.