3 Buttons, No Vents. An Italy made Super 150's Extra Fine is the lightest,softest and finest on the planet. Super 150's Wool = You can probably guess! Yet, even softer than super 100�s and 120�s. Here you are talking about \"Celebrity Status\" and here is where you start getting into high-quality. The difference between a Super 150's Wool and a Standard Worsted Wool is that the wool in a Super 150's Series is softer, lighter and of higher quality, and lies and drape nicer