The MidwayUSA Grid Fleece Long Sleeve Shirt features a durable and quiet 140 GSM polyester and spandex jersey shell lined with 145 GSM grid fleece insulation. Thumb holes in the extended cuffs avoid bunching when layering and keep your sleeves where you want them. This grid fleece shirt is highly versatile, and is a great layering or outer garment. Features92% Polyester/8% Spandex145 GSM Grid Fleece InsulationDurable & Quiet Thumb Holes Keep Shirt In Place