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Tub Only
Tub Only

Tub Only

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5.0
Rated 5.0 out of 5 stars
5.0 Stars (3 Reviews)
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0% interest for 12-months

As Low as $83/mo*

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With a compact 4.3ft tub footprint, it fits into any space, offering you a comfortable full-body immersion experience, even if you're up to 6ft 4". The tub is crafted with military-grade durability suited for the outdoors and sets up in just 15 minutes. Note: Affirm Payment plan available at end of checkout.

 

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0% interest for 12-months

As Low as $ $83/mo*

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Get the Cold Plunge Buyer's Guide

Download our free guide for product specs, what's included, and more.

  • Specs

    Tub Specs    

    • External Dimensions (LWH): 51” x 27.5” x 30”
    • Internal Dimensions (LWH): 43.3” x 20.8” x 30” (Fits up to 6'5", 300 lbs).
    • Wall Thickness: 4”.
    • Military-Grade Drop-Stitch: Ultra-insulated, durable & UV-resistant.
    • Code Lockable Lid: Retains cold & ensures safety.
    • Space-Saving Design: Stainless steel elbow hose connections.
    • Mess-Free Maintenance: 2x Stainless steel ball valves for quick filter changes.
  • What's Inside?

    Essential Setup

    • Dropstitch Tub: Military-grade, fully portable build.
    • Insulated Cover: 4” air barrier + code lockable safety lid.
    • Dual-Action Pump: Fast inflation, no tools needed.
    • Travel Backpack: Pack, store, or move with ease.

    VIP Access

    • Cold Therapy Blueprint: Expert tips to maximize results.
    • Founder-Led Weekly Insights: Ongoing guidance & motivation.
  • Shipping & Returns
    • Fast Shipping: 1-Day shipping if in stock (lead times shown below add to cart button).
    • Free Shipping: To lower 48 U.S. States only. Hawaii, Puerto Rico etc incur additional costs. 
    • International Shipping: We’re a US-based company; email contact@inergizehealth.com for international orders.
    • Risk-Free Trial: 30-day money-back guarantee: If you’re not fully satisfied, return it.
  • Financing Options
    • 0% APR for 12 Months Financing with Affirm: Choose Affirm at checkout for flexible payment options. Most competitors only offer 2 months at 0% APR. 
    • HSA/FSA Eligible: Choose TruMed at checkout for hassle-free reimbursement.
  • Cold Therapy Benefits
    • Joint Relief & Faster Recovery: Reduce stiffness and bounce back faster.
    • Better Sleep: Calm your nervous system for deeper rest.
    • Stress Resilience: Train your body to handle pressure.
    • Sharper Focus: Boost clarity, drive, and brain performance.
    • Hormone Support: Activate brown fat to support testosterone + metabolism.
    • Immunity Boost: Strengthen your body’s natural defenses.

Ships in 1 Day - In-Stock

Free Delivery*
30-Day Guarantee
1-year Warranty
100% U.S.-Based Customer Support
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Tub: Compact. Durable. Built for Life.

Effortless Setup in Just 15 Minutes

Step 1: Inflate, connect hoses, fill with water, and plug in—no tools needed.

Step 2: Power on, sync with the Inergize app, and set your ideal temp and schedule.

Step 3: Step in and feel the reset—boost strength, clarity, and recovery.

Unlock Peak Performance with the Power of Cold Immersion

Backed by Science. Trusted by High Performers. Discover 8 Game-Changing Benefits of Cold Exposure for Your Body & Mind.

Recover Faster. Relieve Joint Pain.

Reduce your inflammation, ease stiff joints, and speed up muscle repair—so you stay mobile, active, and pain-free as you age.

Sleep Deeper. Wake Up Sharper.

Lower your core body temperature and reset your nervous system so you fall asleep faster, recover more deeply, and wake up recharged.

Elevate Your Mood

Boost dopamine by up to 250%, flooding your brain with feel-good chemicals that elevate your mood and melt away stress.

Master Stress. Build Resilience.

Train your nervous system to stay calm under pressure — helping you handle life’s demands with focus and control.

Strengthen Immunity

Increase white blood cells and stimulate lymphatic flow—fortifying your defenses so you stay healthier, longer.

Boost Energy. Power Your Day.

Improved circulation and oxygen delivery give you clean, lasting energy—without the crash or dependency.

Burn Fat. Boost Metabolism

Activate brown fat and support natural testosterone levels—keeping you lean, strong, and hormonally optimized.

Age Powerfully. Perform for Life.

Reduce chronic inflammation, support cellular repair, and stay strong, sharp, and energized—no matter your age.

See Why 5,000+ Customers Trust Inergize

The Ultimate Recovery Tool for Athletes
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“As a professional athlete, nothing compares to Inergize for reducing inflammation and muscle soreness.”

Dom L.

Built for Bigger Bodies
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“I love the depth of this tub! At 6'2" weighing 265 lbs, I can fully submerge to the base of my skull without overflowing.”

Todd Y.

The Whole Family Loves it!
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“My spouse and I use it 4–5 times a week—with our kids joining in—improving our inflammation, recovery, mental clarity, and sleep.”

Catherine C.

Can’t Believe It’s As Good As The Hype
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“I had an issue getting started but the team at Inergize got right back to me and even the owner reached out to see if I wanted to chat.”

Justin B.

Perfect for Any Space
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“I have my tub set up in my garage, and it’s so easy to move—it fits perfectly into my busy lifestyle.”

Stephen N.

Game-Changer for Athletes with Joint Pain
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“I’m an avid cyclist with arthritis—using this tub after rides has significantly boosted my recovery and performance.”

John-S P.

Best Investment for Peak Performance
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“I use it 4–5 times a week; it dramatically reduces soreness so I can train harder and recover faster.”

Brian H.

Say Goodbye to Chronic Pain
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“I use it 4–6 times per week—it’s made a huge difference in easing my elbow tendinitis and rotator cuff pain.”

David D.

The Benefits Are Evident
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“More energy, better sleep, and mental clarity—the benefits of cold plunging are truly evident in my daily routine.”

Hunter S.

I Love The Discipline I’ve Built
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“Doing something uncomfortable but safe has transformed my mental outlook—I feel renewed after every plunge.”

Michael S.

Hands Down Best Customer Service
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“The team is simply the best—they respond quickly and keep you plunging without any hassle.”

Phillip F.

The CEO Truly Cares
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“This has been the best investment of the year—portable, high quality, and the CEO truly cares about his clients.”

Jali C.

What Are You Waiting For?
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“The quick payment plan and unmatched quality made it a no-brainer. It’s time to pull the trigger on optimizing your health.”

Gabriella C

Life-Changing!!
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“I now have more energy, focus, and discipline. This plunge has truly changed my life for the better.”

Devin O.

Best Cold Tub For Home Use!
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“I bought this unit because other tubs were too big and not deep enough. Its compact design fits my urban lifestyle perfectly.”

Erwin Q.

Why Inergize?

Engineered to Perform. Built to Last.
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  • Founded by a Master’s-level engineer, Inergize is built with industrial-grade compressors and premium materials—so you get fast, powerful cooling that stays consistent for the long haul.

America’s Most Trusted Cold Tub Brand
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  • We’re not just another startup. Inergize is the longest-running portable cold tub company in the USA, with 3X more 5-star reviews than anyone else. We launched with crowdfunding on Indiegogo in 2022, but now we’re the go-to choice for serious high-performers.

Support That Has Your Back
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  • You’re not just buying a tub—you’re backed by real people. Our US-based team includes expert engineers who offer rapid video troubleshooting and hands-on support whenever you need it.

More Than Just a Cold Tub 
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  • With your purchase, you’ll unlock our 27-page Cold Plunge Blueprint, bi-weekly insights straight from our founder, and exclusive access to IRL cold plunge events with the Inergize community.

Frequently Asked Questions about Cold Plunge Tub

Absolutely! The Inergize Cold Plunge Tub is made from military-grade drop-stitch polyester fabric, the same rigid, high-strength material used in inflatable paddle boards and kayaks.

  • Supports 200 lbs on the edge without bending or spilling.
  • As strong as an acrylic bathtub, yet portable enough to roll into a duffle bag.

We’ve fit a 250lb+ person before, you just need to be careful of the water level check out some photos here.

We’ve also had multiple >6ft 5” users comfortably fit and head dunk without their knees popping out or water spilling over the edge.

"Best part is that being 6’- 4” I STILL totally fit in the tub, all the way submerged up to my chin, without needing to do a yoga pose just to fit. I can comfortably sit, fully under the water, every time AND I can grab the top rails to pull myself up when getting out (unlike a normal tub)." - Ian Rice.

If it’s marked “In Stock”, we ship within 1 business day to the lower 48 U.S. states.

  • Hawaii, Alaska, U.S. territories: Add 8 extra days.
  • International orders: Email contact@inergizehealth.com for a shipping quote.

We stand by our product with a risk-free trial and warranty:

  • 30-day money-back guarantee—return it if you’re not 100% satisfied.
  • 1-year warranty (6 months for commercial use) covering manufacturing defects.
  • Dedicated U.S.-based support to troubleshoot before processing any return.

If you ever have an issue, we’ll do whatever it takes to get you plunging again.

Yes! We offer 0% APR financing for 12 months through Affirm.

  • No hidden fees
  • Flexible monthly payment plans
  • Instant approval check at checkout

See if you qualify in seconds, add to checkout and select Affirm—no impact on your credit score.

Specifications

Dimensions & Requirements

Tub Specifications

  • Exterior Dimensions: 51” L x 27.5” W x 30” H
  • Interior Dimensions: 43.3” L x 20.8” W x 30” H
  • Weight (Empty): 25 lbs
  • Weight (Full): 800 lbs (with water)
  • Water Volume: 100 gallons
  • Placing on a deck or balcony? Ensure it can support at least 800 lbs.
0% APR Financing
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Get your Inergize Cold Plunge today with 0% APR for 12 months through Affirm. Flexible payment plans, instant approval, and no credit impact at checkout.

12-Month Warranty & Extendable 
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Your chiller and tub are backed by a 1-year warranty, with optional upgrades to 3 years in your cart. Our U.S.-based support team is always just a call away.

Eligible for HSA & FSA
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Use your HSA or FSA benefits for instant reimbursement via TrueMed at checkout. No paperwork. No hassle. Just savings.

Zero Cost Delivery 
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Zero-cost delivery and no hidden fees. In-stock units ship within 1 business day, so you can plug in and plunge—fast.

Included Bonus Items ($200 Value)

Every Inergize Cold Plunge comes with a bundle of essential accessories to enhance your experience.

Inflatable Cover 
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4" air insulation + safety buckles keeps water clean, rain out, and kids safe.
Stainless Steel Ball Valve Elbows (x2)
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Space-saving elbow valves for quick filter swaps and mess-free maintenance.
Backpack
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Lightweight, durable, and designed for portability. Take it to your gym, race, or retreat—zero hassle.
Blueprint Book
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Expert strategies + bi-weekly founder insights to help you master cold therapy, recovery, and mindset.
Repair Kit
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Quick-fix patches so you're never out of commission. Stay ready, stay in routine.

As Featured In…

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"It has a oval, short, deep design that has a small footprint and doesn’t take up as much space as other tubs."
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“Inergize is the best portable cold plunge. Its water lasts up to 6-months with just 5 min of maintenance per week.” 
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“More portable, powerful and 2 degrees colder than other plunges at higher price points.”
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“This is one of our favorite cold plunges on the market. High-quality and works well in tight spaces.”
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“Inergize Ice bath is the optimal mix of portability, style, and cutting-edge technology.”
5.0
Rated 5.0 out of 5 stars
Based on 3 reviews
Total 5 star reviews: 3 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend this product
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3 reviews
  • PR
    paul r.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 year ago
    great product and great company...

    i'm 6' 4" and i have no problem fitting in this tub. when inflated, the side walls are completely stiff and easily hold my weight. it shrinks pretty small when deflated. i am a fan.

    inergize health provides great service, and they are deserving of all 5 stars.

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  • JG
    Jordan G.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 years ago
    Awesome Tub, Better Company

    What an awesome tub!! Unfortunately after the tub was purchased and running, a small leak was found in the green connection point. Inergize's team and I scheduled a video conference and the problem was fixed very quickly. A new tub was sent to me and everything has been great since. The Depth of the tub is my favorite. No splashing over, no water on my, chiller, very very well built. I use it everyday and find myself looking forward to the chill every morning. Ciaran has great videos online that meet all my needs for maintenance and other quick tips. I have been bragging about this tub to all my family and friends who have already decided to purchase the Inergize tub and chiller as well. Thank you for you dedication to your costumers!

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