One of our most popular styles, the Quantum is a long sleeve zip hood from our Technical Mid Layers collection. Made from stretchy, midweight 260gm merino, this classic hood is ideal for running, cycling, hiking and skiing but also works as casual weekend and lifestyle piece. The features are all about performance, from the shaped zip to the reflective two-way zipper. We've added eyelet panels for ventilation and thumb loops to anchor the hands.