The long-sleeved shirt is excellent adapted as underwear for the shooting jacket. In the most cases it will be weared directly under the shooting jacket.Because of the thin material and the consequently not existing padding you can wear something over the shirt (for example shooting west or t-shirt...).Several international top-shooters already trust in the power of X-Bionic!Energy AccumulatorTM: Fits tightly and reduces muscle vibrations and oscillations. Maintains low heart beat, supports the stabilization of lower blood pressure and the supply of nutrients through quicker reflux of blood through the veins to the heart.Cools when you sweat, keeps you warm when youre cold. Your body reacts to temperature changes with higher activity, which has a negative effect on your performance. Overheating and heat shock are comparable extremes to cold shock. 37°CCRTechnologyTM, developed by X-TechnologyTM, helps your body regulate its temperature and makes conserved energy available for sports. Both conditions, sweating or freezing, drain the body of energy. X-Bionic helps the body maintain the optimal temperature range for longer.