The Full Training Bundle includes everything you need to start analyzing your sweat and optimizing hydration: the rechargeable Nix biosensor pod (weighs less than 0.5 oz), charging case, charging cord, and sweat patches. The pod clips onto single-use patches that adhere to your bicep, measuring fluid loss, electrolyte loss, and sweat composition in real-time during workouts 45+ minutes.

Battery lasts up to 36 hours per charge. Data syncs to the Nix app, which provides personalized hydration recommendations, tracks your sweat profile over time, and compares popular electrolyte drinks to your needs.

Integrates with training platforms like TrainingPeaks (with Strava and Zwift coming). Best for endurance athletes (runners, cyclists, triathletes) who want data-driven hydration strategies.

The biosensor is $129 and includes 4 patches to get started.