Fitness Trainer Lung Training Equipment Silicone Breathing Respirator Mouthpiece

SPECIFICATIONS   Brand Name: VKTECH   Type of sports: Cadio Training Training Site: other Hign-concerned Chemical: None Teaching Mode: Book Model Number: Lung Fitness Trainer Classified by Exerciser Number: 1 Function: Body   Lung Respirator Fitness Trainer Silicone Mouthpiece Exercise Training Equipment Accessories Feature: Breathing exercise equipment to challenge yourself for better exercise and improve overall endurance. 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 - Adventure lung breathing training instrument is very compact. Easy to carry. The adjustable resistance dial makes the simplest task more difficult, and can exercise more intensely according to your needs. Specification: Material: silicone Product size: 9.5 * 5.5cm/3.74*2.16in Note: Due to the different monitor and light effect, the actual color of the item mi