Performance. Backed by evidence

Independent testing at Loughborough University, one of the world’s leading centres for human performance, evaluated how Zone3 wetsuits influence speed, efficiency, and physiological load across different athlete levels. 

ZONE3 athlete Casper Stornes

Swim Faster. Enhance Endurance. 

To verify performance, Zone3 worked with experts at Loughborough Sport, one of the world’s leading sports-science institutions. 
 
Three triathletes, beginner, intermediate, and advanced, were tested across identical 750 m swim trials, both with and without Zone3 wetsuits.

The data revealed how each wetsuit level supports different types of swimmers, improving speed, stroke efficiency, and reducing fatigue markers. 

Results
sUMMARY
Chart from the Loughborough University Sport testing comparing the ZONE3 Agile, Vision and Vanquish-X wetsuits on average speed increase, efficiency change and blood lactate change.
What It Means 


Independent testing., during a case study, confirmed that wetsuit use improved swim speed and efficiency for all participants, with varying benefits across ability levels:

BEGINNERS:
Experienced the largest gains in comfort, confidence, and energy conservation.

INTERMEDIATE: 
Results varied — showing the importance of wetsuit familiarity and fit.

ADVANCED SWIMMERS: 
Achieved notable gains in efficiency and pace using the Vanquish-X.

These results reinforce what athletes already know: when your kit is built around performance, you can move faster with less effort. 


A swimmer in a black ZONE3 wetsuit and swim cap at the waterline, half above and half below the surface.