The Lowline II Lightweight Core Stretch Sweater is an overhead midlayer made from recycled polyester/elastane midweight fabric. It is warm, light, stretchy, and quick-drying. Featuring a half-zip fastening to allow for adjustable airflow. This versatile and lightweight sweater is crafted from iLUS Core fabric, which is soft, brushed on the inside for extra warmth, and quick-drying. With 4-way stretch and an inner zip guard, it offers comfort for all movements. The half-zip design allows for adjustable airflow. It's perfect for layering during skiing, hiking, biking, walking, or for cooldowns and warm-ups. A must-have for any outdoor enthusiast! It features lightweight Ilus Core warm-backed knitted stretch fabric, is quick drying, and has a half-length zip with an inner zip and chin guard.