ST1 Tether System install The gold standard in swim

The gold standard in swim resistance belts—trusted by thousands of happy customers

built to handle chlorine and salt water year after year

and water jogging system designed exclusively for swim spas

or ST3) to unlock swimming

ST1 Tether System install The gold standard in swimCompact Pools. Full Body Training. The ST1 turns small water into a real workout. Designed for tight spaces and swim spas, it delivers consistent resistance while minimizing vertical movement. Instead of swimming laps, you swim effort. Why This Model Best choice for tight spacesstable, predictable positioning without needing depth or distance. Feel Stable, centered resistance ideal for conditioning, rehab, and daily movement. Best For Swim spas Small