evo.com | Smartwool Activewear Pants > The Smartwool Active Run Pants pair a lightweight outer with a merino and Tencel blend lining for superior comfort and temperature regulation on longer runs. The quick-dry, stretch-woven fabric moves with you and doesn't hold sweat, while vents at the back hem keep airflow moving. Main Body & Pockets 86% Recycled Polyester / 14% Elastane Reflective Elements Vents at Back Hem Waistband & Groin Lining 53% Merino Wool / 47% TENCEL(TM) Lyocell Regular Fit Room to move without additional bulk. | Smartwool Active Run Pants Men's 2026 - X-Large Black | Wool/Elastane/Polyester