Lightweight winter shirt made from recycled materials. The extremely versatile Essentials Light Mid Layer with a half-zip is primarily made of comfortable, stretchy recycled polyester. The inside features lightweight, brushed fleece that feels pleasantly warm against your skin when it gets a bit cooler outside. Wear the mid layer under a vest or over a base layer – this way, you'll always be well-equipped for various outdoor activities. You won't want to take off this simple, warming top. Warm and breathable performance clothing that allows you to fully immerse yourself in the moment.