high quality Versatile Usage: Whether you're an athlete striving for peak performance or seeking to enhance everyday activities, our Breathing Trainer caters to your needs. Tailored for sports enthusiasts including athletes, runners, swimmers, and martial artists, it promotes improved respiratory capacity, facilitating excellence in high-energy programs.Effective Breathing Program: Our Breathing Activity Program fosters consistent improvement through simple exercises integrated into daily routines. Repeating seven inhalations and exhalations for two minutes each, users witness gradual development of respiratory muscles and enhanced breathing endurance over time.Breathing Trainer:Our compact breathing trainer is made of FDA food-grade silicone to enhance the breathing experience and optimize respiratory performance. Ideal for users of all backgrounds, it strengthens the respiratory muscles and expands the diaphragm, resulting in increased strength and endurance.Progressive Improvement: Experience progressively intense workouts with our breathing exercise device. Witness significant improvements in inhaled breathing and overall respiratory comfort after just a few sessions. Unlock your full potential and elevate your breathing performance with our Breathing Trainer.Customizable Resistance: Featuring adjustable resistance levels, our trainer allows customization based on lung capacity and desired results. Personalized adjustments to the flow valve enable users to fine-tune training intensity, ensuring optimal performance enhancement. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store