Material Composition:Body: 73% Cotton, 23% Acrylic, 4% Elastane/ Collar: Cuff: 52% Cotton, 41% Acrylic, 7% ElastaneCare Instructions:Machine wash up to 40 degrees, gentle cycle, Do not Dry CleanDescription:Keep warm with HEATTECH: thermal clothing technology from Japan. This innovative fabric absorbs and retains body heat to keep you warm. Fibres one tenth the width of a human hair trap air to prevent warmth from escaping, while wicking away moisture from the body to keep you dry. These ultrafine fibres provide a smooth feel against the skin and can even neutralise odours to keep you feeling fresh.HEATTECH Extra Warm Cotton is 1.5x warmer than classic HEATTECH, making it perfect for colder days. A special knitting technique produces a thicker material with greater heat retention, while brushed cotton feels warm and cosy against the skin.Waffle fabric with a casual look, great for layering. Comfortable 100% cotton lining.- 100% cotton lining for comfort. – Waffle fabric for a casual style. – Bio-warming, insulating, deodorizing, and stretch features for warmth and comfort. – Shorter sleeves stay hidden under outer layers. – Works great as innerwear or as a layering piece.- The images shown may include colors that are not available.