DHinkyoung Breathing Exerciser for Improves Lung Capacity, Adjustable Lung Strengthening Trainer, Deep Breathing Lung Exercise Device Lung Expander for Respiratory Therapy & Mucus Clearing

•Adjustable Resistance】You can easily adjust the resistance level when using it to meet various training needs. Benefit from precise lung training for optimal results.

•【Lung Expansion Training】Long-term use of this breathing trainer strengthens and reinforces the respiratory muscles to improve oxygen intake. Targeted breathing exercises support the lungs and enhance a comprehensive breathing program.

•【Enhance Lung Capacity】This amazing lung expander is designed to maximize respiratory function and is the ultimate tool for lung endurance, dramatically improving breathing.