DetailsQuiksilver Men's Size Chart No more choosing between warmth, comfort, and style. The Keller Zip-up Hoodie gives you all three with plenty to spare. The plush polyester fabric makes this hoodie your first choice on frosty mornings. While the classic fit layers over your favorite tees without looking bulky. Plus, iconic Quiksilver detailing delivers subtle style to make this sweatshirt wearable everywhere.