This thing works with cold water only. Why? Because hot water makes the ions lazy. They’d rather take a nap than swap minerals. So you get soft, chilly water. Perfect for rinsing your face after a sweaty hike.
It uses salt pellets. Yes, like your grandma’s dishwasher. But you only refill it every 3,000 gallons. That’s like 60 baths or 150 showers. Or one very long, spa-like weekend.
You can even watch the salt level through a transparent window. It’s oddly satisfying. Like a lava lamp for water nerds.
The “oops” moment
One reviewer accidentally dropped theirs in a lake. It floated. They fished it out, dried it off, and it still worked. The thing is basically a rubber duck with superpowers.
Relay® 6-Person Hot Tub - Hot Spring Spas
Another traveler used it in a desert motel. The water was so hard it crunched like cereal. After one cycle, the shower water felt like silk. He bought a second one for his mom. Hero status achieved.