adidas Men's TechFit Baselayer Compression Short Sleeve Top 100% Other Fibers Imported 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 Polygiene odor control, based on silver salt (silver Chloride) made from recycled silver, helps clothes, footwear and gear stay fresh and last longer between washings UPF 50+ UV protection Compression fit for support and reduced muscle vibration