OxyBreeze Breathing Trainer with Jaw Trainer, Lung Capacity Exercise Device and Lung Exerciser for Respiratory Muscle Exercise and Increased Sports Breathing Fitness| Lungs Exercise Equipment | Men and Women | Black

Material of product is good

The resistance is on the lower side even in highest setting.The jaw exerciser broke after a few days of usage.

The Oxybreeze Breathing Trainer is excellent! It's helped me improve my lung capacity noticeably. The device is easy to use and feels durable. Plus, the free jaw liner adds extra comfort during workouts. Highly recommend!

Don't waste your money buying this in set.I hardly used it couple of time,when i tried at 11lbs it broke.

very adjustable resistance.this device very easy to carry.very light weight, easy to clean.sach a amazing product.valuable foe moneyhigh quality flexible silicone.looking so amazing.very useful for gymnastics, swimming and outdoor activities also for improving exercise endurance.highly recommend...thanku amezon for great product

It's made of silicone. It's comfortable to put in mouth easily. It's helps to breathe properly from low to high level and keeps lungs better to best . I used while in walking or jogging to make breathe properly and keeps lungs strong.Great product to use it .

Not as effective as promoted

Excellent product. After one weeks use there is improvement in my breath and improved my lung capacity. It is helping me in deep breathing habit.