Ideal as a base layer or as a standalone top, the Columbia Heavyweight Half-Zip Pullover is built for maximum warmth and mobility in the deep cold. High-performance 85% polyester, 15% elastane Omni-Heat Thermal Reflective waffle-knit fabric at the core, shoulders, and arms reflects and retains body heat for temperature regulation and even greater warmth. Omni-Wick four-way-stretch jersey inserts at the sides and underarms help disperse excess heat and wick away sweat for quick evaporation, keeping you dry and comfortable. An antimicrobial treatment on the exterior helps reduce odors, so you stay fresher longer. Raglan sleeves and ergonomic seaming deliver improved range of motion, while a drop-tail hem in back provides added coverage where it counts. Thumbholes at the sleeve cuffs help further seal in body heat for even greater warmth. Imported.