Frozin 400 Cold Plunge Tub
- Holds the cold between plunges with 2-inch foam insulation and an insulated lid
- Holds the cold between plunges with 2-inch foam insulation and an insulated lid
- Skip daily ice runs, 3/4 inch ports fit virtually any chiller
- Comfortably fits up to 6'3" and 300 lbs in 100 gallons
- Roto-molded in the USA for years of daily use indoors or out
Two inches of foam and two chiller ports
Cold water only stays cold if heat cannot get in. The 400 wraps the water in 2 inches of high-density foam, with an insulated lip and lid closing the top, so ice melts slowly instead of vanishing in an afternoon. And when you are ready to stop hauling bags, the 3/4 inch quick-connect ports accept virtually any chiller, no new tub required.
How long water holds its chill varies with climate and use; cold water immersion is a personal practice and does not treat, cure, or prevent any condition.
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Recommended pairing
The 400 tub keeps its cold with foam insulation, and its 3/4 inch IN and OUT ports connect to a chiller. Dial an exact 37 to 60°F and hold it every session, with no daily ice runs.
Frozin 400 Cold Plunge Tub
$899.10
Frozin Chiller
$989.99
Description
The Frozin 400 Cold Plunge Tub turns daily cold therapy into a ritual worth keeping. Proudly made in the USA from a fully foam-insulated, roto-molded shell, it holds the cold far longer than an uninsulated barrel or inflatable bath, so every plunge is as cold as the last.
Finish: White Granite, Grey Granite, or Tan. Ideal for post-workout recovery routines and relaxation.
Support: Prefer to talk it through? Reach our team at (888) 876-0725.
Key details
Frozin 400 Cold Plunge Tub is an insulated, chiller-ready cold plunge tub with a roto-molded shell made in the USA. It holds 400 quarts (100 gallons) and fits people up to 6'3" and 300 lb. The shell carries 2 inches of high-density foam plus an insulated lip and lid, and its 3/4 inch IN and OUT quick-connect ports work with virtually any chiller. It comes in White Granite, Grey Granite, or Tan, and the box includes the tub with insulated lid, 4 latches, a drain plug, 2 port caps, and Teflon tape.
It fits routines built around recovery, energy and focus, and relaxation.
Is this right for you?
You'll get the most from it if
- You have a drain path nearby; the plug empties 100 gallons in place, so a yard or floor drain helps.
- Tall plungers tired of knees poking out; at 6 ft 3 in you can still get your shoulders under.
- You want to start with ice and decide on a chiller later; the ports ship capped until you need them.
- It can live outside year-round; the UV-resistant shell handles sun and the lid latches down.
Maybe look elsewhere if
- You want chilling, filtration, and hoses on a single order; the Frozin Complete System bundles it all.
- You need a plunge that packs away between seasons; the TheraFrost Cold Plunge inflates, deflates and stows in a bag.
Specifications
| Format | Insulated cold plunge tub (chiller-ready) |
|---|---|
| Capacity | 400 quarts (100 gallons) |
| Dimensions | 48 × 28 × 28 in (L × W × H) |
| Weight | 90 lb empty |
| Fits | Up to 6'3" and 300 lb |
| Construction | Roto-molded shell, made in the USA |
| Insulation | 2 inches of high-density foam, insulated lip and insulated lid |
| Chiller ports | 3/4 inch IN and OUT quick-connect ports; works with virtually any chiller |
| Shell | UV-resistant with reinforced handles; indoor or outdoor use |
| Finish | White Granite, Grey Granite, or Tan |
| In the box | Tub with insulated lid, set of 4 latches, drain plug, 2 port caps, roll of Teflon tape |
How to use
- Set upPosition the tub, install the latches and drain plug, and fill; no plumbing needed
- ChillPair with a chiller via the 3/4 inch quick-connect ports, or use ice
- TemperatureMost people plunge between 37 and 59 °F; start warmer and work down as you adapt
- SessionStart with 2 to 3 minutes and build up gradually; never push past discomfort
- Frequency2 to 4 sessions a week is a common rhythm; consistency matters more than duration
- CareClean the tub monthly; a filtration system keeps water clear between changes. Protect from freezing in winter
- Good to knowNot for anyone with a heart condition or high blood pressure, or during pregnancy, without medical advice. Never plunge alone
Shipping & delivery
Free shipping within the United States on every order. Most orders ship within a few business days, and you will receive tracking as soon as your order is on its way. Larger items may ship freight with a delivery appointment.
Warranty & returns
1-year warranty.
Not the right fit? You have 60 days from delivery to send it back. Reach out to our team, we will email you a prepaid return label and the right address, and refund you once it arrives. Items need to come back in their original packaging. Prefer to exchange it for something else? We handle that at no extra cost.
Cancel free of charge any time before your order ships. If anything arrives damaged, send us photos of the item, the box and the SKU within 24 hours and we will sort it out for you.
See our Return Policy for full details.
Why it earns a place in the stack. Cold exposure is the Restore layer's simplest lever, and the 400 removes the friction that breaks the habit: a foam-insulated shell keeps the cold and chiller-ready ports let you hold an exact temperature every session. When the water is as cold on day ninety as day one, the ritual sticks.
Choose options
Compare the pair
Tub Only or the Complete System?
You are viewing Tub Only
$899.10Viewing |  Complete System
$1,844.99View | |
|---|---|---|
| Best for | You own a chiller or will use ice | Plug in and plunge, out of the box |
| Chiller | Not included; add one later or use ice | 3/4 HP, digital control 37 to 60 °F |
| Filtration | Not included | Pump, filter and strainer |
| Hoses and fittings | Port caps and Teflon tape | 3 quick-connect hoses and fittings |
| Cooling | You manage the temperature with ice | Holds your set temperature automatically |
- Best for
- You own a chiller or will use ice
- Chiller
- Not included; add one later or use ice
- Filtration
- Not included
- Hoses and fittings
- Port caps and Teflon tape
- Cooling
- You manage the temperature with ice
- Best for
- Plug in and plunge, out of the box
- Chiller
- 3/4 HP, digital control 37 to 60 °F
- Filtration
- Pump, filter and strainer
- Hoses and fittings
- 3 quick-connect hoses and fittings
- Cooling
- Holds your set temperature automatically
Bought separately, the tub, chiller and filtration system come to $2,068.19. The Complete System saves you $223.20. Add later: Frozin Chiller $989.99, Frozin Filtration System $179.10, Frozin Cold Plunge Pillow $35.99.
Choose the Tub Only if you already own a chiller or will use ice; choose the Complete System to plug in and plunge. Both include the same made-in-the-USA Frozin 400 tub: 400-quart (100-gallon) capacity, 2 inches of high-density foam insulation, insulated lid, 4 latches, drain plug, port caps and Teflon tape.
Frequently Asked Questions
Will I fit in the Frozin 400 cold plunge tub?
Does the Frozin 400 work with any chiller?
How well does the Frozin 400 hold the cold?
How much does a filled Frozin 400 weigh?
Does the Frozin 400 come with a chiller or filter?
How should I start cold plunging in the Frozin 400, and who should check with a doctor first?
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Our approach
Every product earns its place.
No single thing changes your biology on its own. What matters is the system, and whether each piece earns its place. Here is how a device makes it into Kove.
01
Start with the evidence
Where there is research behind how something works, we read it. We look at the real mechanism a device relies on, like the wavelength, the frequency, or the dose, and whether the evidence holds up. Substance comes before marketing, and we are honest about how strong that evidence is.
02
Separate mechanism from marketing
A claim is not a mechanism. We check a device's real output against its stated one: does the panel emit the 660 and 850nm it advertises, at the irradiance that makes those numbers matter? The marketing language gets set aside. The measurable spec is what we judge.
03
Verify build and dose
Even a good idea does nothing if the hardware is weak. We confirm the output is consistent, the dose is usable in a real daily routine, and the build holds up over years, because a device only helps if it lasts as long as the habit.
04
Held to one standard
What clears every step earns its place in the system, held to the same standard as everything else. That consistency is what you can count on.
