The Arc'teryx Cormac Heavyweight Shirt LS Mens is designed for those who seek comfort and freedom of movement during high-intensity activities in cooler climates. This long-sleeve shirt, crafted from Phasic AR II material, offers essential thermal performance and moisture management. Its engineered polyester fabric provides stretch, sun protection, and a smooth feel against the skin. The ergonomic design and articulated patterning ensure unrestricted mobility, making it perfect for layering or wearing alone. Moisture-wicking fabric enhances comfort during activities Low profile collar with taped back for added comfort Merrow stitch seams reduce irritation and seam size Thumb loops keep cuffs and sleeves in place for warmth and sun protection FC0-DWR finish repels moisture effectively Silvadur antimicrobial treatment resists odour Articulated patterning allows for unrestricted movement PFAS compliant for environmental responsibility Fair Trade Certified, supporting worker well-being Wei