high quality Enhance Sports PerformanceEssential for sports enthusiastsThe device can be combined with other forms of exercise, such as athletics, running, swimming, gymnastics, martial arts, and outdoor activities. Achieve greater respiratory capacity for peak athletic performance.Alleviate Anxiety and StressDeep breathing has been proven to be an effective method for relieving anxiety and stress.Using this device for respiratory training can assist users in relaxing both body and mind, alleviating the tension experienced in daily life.Time-Saving and Efficient WorkoutThe device also suitable for a busy lifestyle,it comes with Portable Container, which is easy to carry and use at any time.enables users to engage in efficient respiratory training in a short amount of time.Adjustable Resistance LevelYou can easily adjust the resistance valve to select your desired level of breathing and resistance to achive better trainning result.Softness and Safetyfood-grade silicone manufacturing ,the product is compact design easy to carry and hassle-free to clean,double individual package, ensuring a clean and safe mouthpiece for every use.