The Phantom Training Mask is an innovative training device that enhances overall performance in sports. It trains the muscles you need for any physical activity - your respiratory muscles. The mask can be worn during almost any dry sport. The Phantom Training Mask is equipped with the Phantom Regulation System, which restricts airflow during training. As a result, the diaphragm and intercostal muscles must work harder to fill your lungs. The mask offers four different difficulty levels, which you can select using a lever on the mask. The Xhale valve allows air to flow in slowly and to exit immediately when exhaling. This valve prevents the formation of one-sided air currents or turbulence that can disrupt training. The valve is integrated into the medical silicone mask, which reduces the risk of allergic reactions and skin irritations. The mask is secured with a washable and removable strap to prevent slipping and features an innovative closure system that provides high wearing comfort.