NEW TECHNOLOGY, IMPROVED PERFORMANCE. WHY IT’S SPECIAL: Ibex's lightest weight base layer ever, perfect for most cool and cold conditions Nuyarn® is a spinning technology that makes merino 35% more thermally efficient, 85% more elastic, and 8.8x more durable than its ring-spun counterparts Super soft, no-ride elastic and flatlock stitching for all day comfort GOOD TO KNOW: Love the Woolies 1 Collection? This is its future. Nylon Core for Durability Flatlock Seams Reduce Chaffing Covered Elastic Waistband Crafted using Nuyarn® technology, a twist-free spinning method designed to amplify the inherent performance of merino wool. This ultra-lightweight base layer fabric offers a remarkable 35% improvement in thermal efficiency, making it an ideal choice for various climates. Pro-Tech surpasses its traditional ring-spun counterparts with an astounding 8.8 times increase in durability and an impressive 85% boost in elasticity. Experience unparalleled comfort and longevity with Ibex's Pro-tech fabric, a testament to innovation and quality in every thread.