Training equipment to strengthen the muscles needed for breathing This item is brand new and unopened. You can effectively train to improve your breathing ability anytime, anywhere, without going to the gym! Recommended not only for wind instrument players but also for those who regularly play sports ♪ ・Improved breathing ・Recommended for athletes and musicians ・Results in 4 weeks ・Easy training for a few minutes a day Details ■ Standard load: Recommended for women, young people, the elderly, those who do not usually exercise, and first-time users.