S4 Trainer - swim / surf model
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Regular price $1,295.00
The S4 is a game-changing innovation in fitness training for swimmers, surfers, and people looking to strengthen their shoulders.
- You exercise in a natural range-of-motion not constricted by weights, cables, pulleys, stretch bands, or a machine.
- You access levels of resistance from minimum to maximum that you control without having to interrupt your workout
- You gain strength and stamina thanks to the science of granular resistance.