Breathing Resistance Training Mask for Sports & Workout "Covid-19" Simulated Gemstone

Simulated Gemstone

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Breathing Resistance Training Mask for Sports & Workout "Covid-19" Simulated GemstoneThe Training Mask is a respiratory resistance device that is designed to increase breathing power and improve breathing mechanics. Training Mask's multi patented dual channel air flow technology compresses air at the inlets with resistance caps and then adds air resistance via flux valves. Features: Improve lung capacity It helps burn more calories during the workout, exercising, or jogging. Made from high quality ultra durable material.