AIRWAAV ENDURANCE Performance Mouthpiece (2-Pack) cotton z-index:-1}

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New midsole geometry is shaped for a super smooth ride from heel to toe

Upper: Birkibuc

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AIRWAAV ENDURANCE Performance Mouthpiece (2-Pack) cotton z-index:-1}FUEL INJECTION FOR YOUR LUNGS The AIRWAAV ENDURANCE Performance Mouthpiece is designed specifically for endurance athletes. AIRWAAV directs your tongue down and forward when you gently bite down, it creates the optimal airway opening. Its patented and scientifically proven with peer reviewed, published research to provide athletes: Improved Breathing: Increases your airway opening by up to 25% Increased Endurance: Reduces your respiratory rate by 20%,