Prudent layering pays off bigtime when bone chilling weather presents itself, and Grundéns® Men's 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 you’re facing. Thermal Base Layer Performance Top HeiQ™ anti odor properties Moisture-wicking Non-pilling UPF 50 sun protection Zippered chest pocket 3M™ reflective chest logo Chin guard Machine wash cold; tumble dry low Product Features: Fabric:222g/m 50% Nylon, 41% Polyester, 9% Spandex with brushed back Grundéns Men's Grundies Thermal 1/4-Zip Long-Sleeve Base Layer Top