Fit, function, fabric – the Cormac Heavyweight is built for freedom of movement and high-output comfort in colder conditions. Essential thermal performance, moisture management, and softness come from its Phasic™ AR II material. An engineered polyester made with wicking fibres, it provides stretch, sun protection, and is stitched for a smooth finish next to the skin. The ergonomic design and articulated patterning remove restriction, and the clean fit layers easily and wears comfortably on its own.