Key features

• •Built for Training：A professional and efficient breathing training tool to make your workout twice as effective as it should be. Ideal for Sports & ExerciseCore Stability,Aerobics,Cardio Endurance,Muscle Building,Home Exercise,Resistance Training,Agility Training,Postural Control Training,Recovery Training,Strength Training,Fat Burning.
• •Outstanding Quality：3D curve facial fit ensures comfortable wearing and no side leakage of airflow. Lightweight and high elasticity headband, thickened and extended Velcro, one-piece moulding. Double-layer soft silicone cushioning. Dual breathing valve structure ensures easy CO2 exhalation.
• •Professional 10-Speed Variable Resistance：Breathing flow control valve variable resistance design, according to the need to change the resistance level. The minimum net resistance can be reduced to 10cmH20 and the maximum net resistance can be increased to 120cmH20.
• •Intensive Exercise of The Respiratory Muscles：Separate intensive training of the respiratory muscles results in a more targeted workout. Intensively trained respiratory muscles help prevent or eliminate respiratory fatigue during physical activity and meet the constant demand for oxygen from other muscles during exercise or extreme training.
• •Feel Free To Use：Food grade silicone soft cushion, imported mother and baby grade material. It can be washed with water, wash with water, dry naturally, avoid direct sunlight. A portable mouthpiece is included. Free special storage box.