Swim Tether for CalSpas
CalSpas swim spas come with a factory-installed base — just pick your model, confirm your fitting size, and add the right system.
Your Tether System
Select Your CalSpas Model
Choose your model and we'll show you the exact Swim Tether system that fits.
What's the inside diameter of the hole in your base?
Measure across the opening where the pole inserts. A ruler or tape measure works.
7/8″ or larger
Standard Swim Tether fitting (0.87″)
Smaller than 7/8″
We'll make your pole with a narrower fitting — no extra charge
Not sure
Send us a photo and we'll confirm the right system for you
Select your model above to see available Swim Tether systems.
ST3 Tether System
ST3-06Complete system — everything included
What's Included
- ST3 System Pole
- 6 ft Dynamic Stretch Cord with Carabiner
- Swim Belt
- Nylon Carry Bag
ST3 Tether System
ST3N-06Complete system — everything included
What's Included
- ST3 System Pole (narrow fitting)
- 6 ft Dynamic Stretch Cord with Carabiner
- Swim Belt
- Nylon Carry Bag
Accessories
Complete Your Setup

Foam EVA Kickboard – Swim Spa & Pool Training
$22.00
Isolate your legs for focused kick training.
View Details
Foam EVA Pull Buoy – Upper Body Isolation Trainer
$15.00
Locks your legs in place to focus on upper-body pull.
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STT Travel Swim Belt
$71.00
Portable swim resistance for hotel pools and travel.
View DetailsQuestions About Your CalSpas Setup?
Not sure which system is right for your CalSpas swim spa? We'll help you figure it out — no pressure, just answers.