adidas Mens Training Techfit Baselayer Tight 100% Fabric Imported Techfit focuses your muscles' energy to generate maximum explosive power, acceleration and long-term endurance; breathable climawarm keeps you warm and comfortable in cold-weather conditions Mock neck styling Polygiene odour 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; embossed graphics on arms Compression fit