The Floating Diamond K Softshell Vest Fleece-Lined Windproof Sleeveless Jacket is the perfect jacket to wear on the golf course. This Vest features a fleece-Lined comfort: Shell: 96% Polyester, 4% Spandex, Lining: 100% Polyester Fleece. Stay warm and cozy with the fleece lining of our vest, offering exceptional insulation and softness.