We partnered with Polartec® to deliver this exceptionally comfortable, flame-resistant baselayer that holds up on the job. With moisture-wicking technology and breathable fabric, it's a go-to as a layering piece or on its own in warmer weather. FR Polartec Baselayer | Men's Flame-Resistant Polartec Baselayer in Light Grey Modacrylic/Rayon, Size: Small by Ariat