evo.com | Smartwool Long Underwear Bottoms > Whether you're hitting the slopes or just adding another layer under your jeans, the Smartwool Intraknit Thermal Merino Base Layer Bottoms will keep you warm, dry, and comfortable. 3D mapping fits your body perfectly and the seamless mesh ventilation and thermoregulating merino prevent overheating so you can feel great wherever you go. Merino Sport Merino Sport yarn combines the power of Merino with the durability and fast dry times of polyester. Slim Fit Intraknit(TM) Technology Insulation, articulation and ventilation are seamlessly integrated to amplify movement and comfort during high-intensity activities. 52% Merino Wool / 44% Polyester / 2% Elastane / 2% Polyamide Machine Wash Cold Gentle Cycle | Smartwool Intraknit Thermal Base Layer Bottoms Men's 2026 - Small Black | Wool/Elastane/Polyester