Put a hold on cold with Duofold by Champion THERMatriX™. Lightweight, insulating top features a 3D textured pattern against the skin that wicks moisture and creates tiny air pockets that help prevent body heat from escaping. C Vapor technology adapts as your body heat rises and helps you dry faster. Chafe-resistant seams and ultra soft stitching for added comfort. Raglan sleeves for better mobility. Thumbholes to help keep the chill out. Reinforced with logo neck tape. 92% Polyester, 8% Spandex.