365 days of the year. Hot or cold. You lace up your shoes and get out there. On the cold days, this adidas running crewneck helps you stay comfortable. It's made with CLIMAWARM+ and is designed to layer. The fabric's waffle structure helps channel air to your skin to help regulate body temperature, while thumbholes help you keep your hands warm. CLIMAWARM+ advanced insulation provides superior engineering with advanced materials that unite for warm, dry and focused performance. Insulating materials trap warmth for optimal body temperature.