S4 Trainer - swim / surf model

Product image 1S4 Trainer - swim / surf model
Product image 2S4 Trainer - swim / surf model

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.
Your S4 comes with a 90-day satisfaction guaranteed warranty and a lifetime warranty on parts and labor.
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