For extremely cold weather, layer with the DRAGONWEAR BASELAYER POWER GRID™ DUAL HAZARD QUARTER ZIP SHIRT. This 9.25 oz. base layer is made of 49% rayon, 38% modacrylic, 10% para-aramid, and 3% spandex. It features zip-neck climate control with draft flap and raglan sleeve for enhanced movement, as well as moisture wicking and breathable material. Fear no cold when layering in the Baselayer Power Grid™ Dual Hazard Quarter Zip Shirt. Arc rated 32/CAT 3 and made in the USA by Dragonwear. Dragonwear Base Layer Livewire 1/4 Zip Shirt