"The Go2 is a great tool I use to help my body maintain high output during hard workouts. It keeps my oxygen levels high which in turn keeps me ready to go the next day - speeding up recovery in-between workouts."
2019 World Mountain Running Champion
18-Time USA National Champion
“As soon as I saw the GO² Device I understood the science behind it and recognized the performance benefits. I've experienced a notable performance increase in training - particularly at high altitude - and look forward to extreme-testing GO² on my upcoming K2 winter expedition in Dec 2019.”
Professional High Altitude Climber
“The GO² is the only mouthguard on the market that is scientifically proven to increase oxygen. What else needs to be said?”
Professional Football Player
"I’ve been using GO² for the last couple of months and I’m amazed at how much better I feel on runs when I use the device."
4x KONA QUALIFIER
"My pace got faster and my heart rate went down."
3x IRONMAN CHAMPION
"GO² helps me control my breathing."