Bundle up for your next trip to Guaranteed Rate Field with this Chicago White Sox Rainer Eco Insulated PrimaLoft Full-Zip Puffer Vest from Cutter & Buck. This Chicago White Sox vest is crafted with 100% nylon and insulated with PrimaLoft technology, making it both lightweight and incredibly warm for those chilly game days. It also conveniently packs into its own pocket, making it an ideal layering piece to take along for unpredictable weather.