Breathing Trainer, Portable Lung Exerciser and Lung Trainer, Adjustable Resistance Handheld Trainer for Oral and Muscular Exercise, Improve Lung Capacity

【SAFE MATERIAL】The breathing trainer is made of food-grade comfortable silicone and ABS material, which is safe and healthy, harmless, hygiene, odorless, strong and durable, wear-resistant, easy to clean, and can be used for a long time.
【BREATHING TRAINING】Can help improve lung capacity, exercise lung function, exercise respiratory muscles, and enhance strength and endurance. Prevent postoperative lung complications. Improve shortness of breath, palpitations and physical function.
【ADJUSTABLE RESISTANCE】The breathing trainer features multi-resistance adjustment and is easy to use. You can change the breathing resistance by rotating the valve to adapt to your different training needs.
【WIDE APPLICATION】The adjustable resistance breathing trainer is suitable for all levels of users, suitable for adults, seniors, children, athletes, fitness enthusiasts, singers, swimming, running, gymnastics, etc.
【EASY CARRY】The breathing trainer is small, lightweight, and easy to carry, and can be easily put into a bag or pocket, which is convenient to use, allowing you to train anytime, anywhere. Integrate exercise into your daily life.