"What Our Gearhead® Experts Are Saying: ""This Featherlight Crewe is my go-to for hot-weather training or layering when I need something super breathable. It’s so light you barely feel it, but it still manages moisture like a champ. The slim, shorter fit is great for active movement—though if you like a looser feel, definitely size up."" The Icebreaker Merino Blend 75 Cool-Lite Featherlight Crewe keeps us cool, dry, and comfortable through every warm-weather adventure. Built from an ultra-light eyelet mesh of TENCEL™ Lyocell and merino wool, this top combines the softness of natural fibers with powerful moisture-wicking performance and quick-drying breathability. The slim, cropped fit moves with us without restriction, making it ideal for trail runs, hikes, or layering under a shell when the weather turns. Merino’s natural temperature regulation and odor resistance keep us fresh from start to finish, while the open mesh texture enhances airflow to maintain that weightless, barely-there comfort Icebreaker is known for."