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The ultimate pullover for outdoor training in colder weather, this 1/4-zip is double-brushed polyester/spandex that's ultrasoft, and features FreeHeat IR technology to boost thermal efficiency without adding weight. The visibly active heating technology features a durable thermo-chromic polymer on the inner face of the fabric that reflects infrared heat, enabling you to see warmth at work, and turning up personal heat. The fabric also offers stretch, allowing unrestricted mobility, and has built-in moisture wicking and odor control.
Active: Our most athletic fit. Close to the body without restricting mobility.