Breathing Trainer Respirator Fitness Equipment Exercise Lung Face Mouthpiece For Household Healthy Care Accessories quantity:50PCS easy to operate

easy to operate

Horn unit: 2

Snap lock needle 20

Lining texture： polyester

Breathing Trainer Respirator Fitness Equipment Exercise Lung Face Mouthpiece For Household Healthy Care Accessories quantity:50PCS easy to operateOverview: Vital capacity: it helps to expand and improve vital capacity without the risk of having to do a lot of aerobic exercise and burning calories. The portable device: The adventure lung breathing training instrument is very compact. Easy to carry. Breathing exercise equipment to challenge yourself for better exercise and improve overall endurance. The adjustable resistance dial makes the simplest task more difficult and can exercise more