In creating our Golden Fleece® Collection, we sought out the world's finest raw materials and innovative technology to craft garments that meet the highest standards of Brooks Brothers. With this sweater, we've taken an extremely fine 15.5-micron merino wool fiber married it with latest fine gauge technology from our sweater masters in Italy. It's crafted with genuine mother-of-pearl buttons and is designed to be extremely lightweight. As part of our 3-D Knit Collection, it has been fashioned as a single, continuous garment, rather than assembled in panels. Without seams, it offers an improved fit, greater comfort and increased durability. dry-clean; made in Italy.