Ariat Men's FR Polartec Baselayer Ariat partners with Polartec® for next-to-skin comfort in a flame resistant baselayer that looks great all on its own. CAT 1 NFPA 70E ATPV 5.0 (cal/cm2) Polartec® Power Dry® FR stays dry next-to-skin by drawing 30% more moisture away from the body, and spreading it across the surface for faster evaporation. Ariat Moisture Movement Technology™ draws moisture out for quick evaporation, keeping you dry and comfortable. Extended inseam construction improves range of motion so cuffs don't ride up and shirt stays tucked in. Technical jersey/mesh long sleeve layering piece Lightweight, breathable, moisture-wicking plaited knit with soft inner surface Crew neck Taped inside back seam