adidas Mens Techfit Base Warm Mock Tee#D82112 Breathable climawarm keeps you warm and comfortable in cold-weather conditions techfit focuses your muscles energy to generate maximum explosive power, acceleration and long-term endurance Stand-up collar; Ultra-soft flatlock seams for reduced chafing and irritation Compression for support and reduced muscle vibration; Breathable perforated fabric panel on shoulders and collar Techfit graphic on back neck; UPF 50+ UV PROTECTION