Auto-updated: July 14, 2026 · Data refreshes whenever either brand receives new reviews, offers or score changes.
Current Discount Codes
Plunge
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Relax Saunas
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4-Dimension Scorecard
| Dimension | Plunge | Relax Saunas |
|---|---|---|
| Trust Score (0–100) | 65.57/100WIN | 62.06/100 |
| Verified Reviews | 2 · ★5 | 3 · ★4.7WIN |
| Product Range | 1 products | 1 products |
| Active Offers | 0 offers | 0 offers |
| Overall Winner | 1 win(s) | 1 win(s) |
Full Side-by-Side Comparison
- Founded 2020 in a garage by Michael Garrett; later joined by co-founder Ryan Duey
- Featured on Shark Tank alongside Robert Herjavec
- Grew through organic influencer gifting (Aubrey Marcus, Andrew Huberman, Tony Hawk, Rich Roll) rather than paid ads first
- Now sells both cold plunge tubs and saunas — not cold-plunge-only
- Portable, tent-style far infrared sauna with a head-out design — not a cabin sauna
- Silver Elite and Black Pro share identical heating technology; the real difference is fabric durability and duty cycle
- Also sells standalone FIR lamps, a Flex Lie Down Sauna variant, books, and replacement parts
- Uses PTC semiconductor heating elements, marketed by the brand as "medical-grade" and "almost 100% pure" FIR output (brand-authored claims)
Products at a Glance
Relax Saunas
About the Brands
Plunge
From a Shut-Down Spa to Shark Tank Plunge was founded in 2020 by Michael Garrett, who built the first prototype in a garage with his father after COVID-19 forced the closure of his brick-and-mortar float spa business. Ryan Duey later joined as a par…
Full profile →Relax Saunas
Portable Tent-Style Saunas, Not Cabins: What Relax Actually Sells Relax Saunas doesn't sell cabin saunas at all — its core products are portable, tent-style enclosures you sit inside with your head left outside the unit, a different format entirely …
Full profile →Frequently Asked Questions
Which is better: Plunge or Relax Saunas?
Plunge and Relax Saunas are evenly matched across our four comparison dimensions.
What are the trust scores for Plunge and Relax Saunas?
Plunge has a Matrix Trust Score of 65.57/100 and Relax Saunas scores 62.06/100, calculated from product ratings, review volume, and active offer activity.
Which brand has more verified reviews?
Relax Saunas has more verified reviews (3 vs 2).
Do these brands have current discount codes?
Check the offers section above for the latest discount codes.
