Purchased on August 29, 2025. I am selling this because I purchased the red color. Breathing Muscle Trainer PLUS Fitness Model (with stepless load adjustment) Product Description Stamina UP with 2 sets of 30 breaths of breathing training per day! Reduces shortness of breath and stamina loss during exercise. You can efficiently train the respiratory muscles, which are inner muscles. Classic performance further evolved ・New mouthpiece for improved fit ・Stepless load adjustment possible ・Easy-to-read load level memory Effects ・Improved inspiratory capacity ・Increased metabolism ・Suppresses the production of lactic acid by increasing oxygen intake Recommended sports Ideal for those seeking endurance, such as running, swimming, road races, and football. *Used only a few times. Alcohol-sterilized.