T nP Accessories Fitness Mask Elevation Training Mask is a patent pending "Resistance Training Device" that helps condition the lungs by creating pulmonary resistance and strengthening the diaphragm. Elevation Training Mask will help you regulate your breathing, increase lung stamina, lung capacity, oxygen efficiency and increase overall mental focus. Description: Bicycle Cycling Anti-pollution Half Face Dust Mask and Gym Fitness Mask Material is soft, comfortable to wear, feels good and it is dustproof Mouth have ventilation holes Suitable for doing activities like biking, riding, snowboarding, or climbing Size: one size fit all Total length: 52.5cm/20.66"(approx) Max height: 13cm/5.11"(approx) Color: Black Activated charcoal filter. Material: Neoprene. Durable and washable
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