Cormac Heavyweight Shirt LS Men's is a performance first layer shirt designed for mountain running, hiking and trail use, built for high-output comfort in cooler conditions.

• Product Type: Men's performance first layer shirts & tops
• Material: Synthetic
• Weight: 160g / 5.6 oz
• Phasic™ AR II engineered polyester with wicking fibres for thermal performance and moisture management
• Regular fit with ergonomic design and articulated patterning to reduce restriction
• Thumbholes and smooth stitching for comfort next to the skin

Layer it under a men's shell jacket for cooler, exposed days, and pair with men's hiking pants for hiking and trail use.

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.

The Cormac Heavyweight Shirt LS was previously the Motus AR Crew LS.