Warm yet light, the Montane Dart Thermo Zip Neck uses luxuriously soft POLYGIENE® treated APEX THERMO ECO fabric with a brushed back and lightly marled face. Designed to boost thermal insulation and provide next to skin comfort as a winter baselayer or standalone layer in-between seasons. Product Code: APBYN7TI0361 Montane - Men's Dart Thermo Zip Neck - Slate Alpine Red | Men's Thermal Tops UK