womens base layer long sleeve lightweight insulation moisture wicking quick dry breathable stretch polypropylene thermal crew neck fitted layering performance outdoor skiing hiking training casual athletic LIFA PERFORMANCE for reliable warmth and dryness no matter the season or activity LIGHTWEIGHT INSULATION for unbeatable comfort even during intense activities. No matter the season or activity, HH LIFA base layers ensure warmth, dryness, and comfort MOISTURE MANAGEMENT with our revolutionary hydrophobic LIFA technology, you'll experience lightweight insulation and efficient moisture management BREATHABLE DESIGN with a baselayer crafted to enhance airflow and comfort for any season or activity ADVANCED LIFA TECHNOLOGY: Experience unparalleled warmth, dryness, and comfort with our revolutionary baselayer design