The Smartech Fleece Vest in Polartec Thermal Pro fabrics are the most visually dynamic and technically advanced of the Polartec insulation fabrics. Polartec Thermal Pro fabrics are also great styling options for virtually every end use. New high loft versions have achieved the highest warmth to weight ratios of any fabric Polartec has ever offered. Other versions have the look of traditional wool with all the performance benefits of fleece. Polartec Thermal Pro is Beretta’s most diverse family of fabrics.