GRUNDIES THERMAL 1/4 ZIP TOP DESCRIPTIONPrudent layering pays off bigtime when bone chilling weather presents itself, and the Grundies base layer collection was designed to help you retain a vital resource, body heat. Offering a variety of material weights combined with HeiQ Anti-odor properties the Grundies collection provides a modular layering system that can be worn in many combinations depending on the conditions youre faced with.FEATURESHeiQ Anti OdorWickingPilling resistantFlatlock seamsZippered chest pocket3M reflective chest logoChin guardUPF 50Active Fit