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Hydragun Supertub

Portable inflatable cold plunge with military-grade marine vinyl construction, touchscreen chiller, and hot/cold functionality from 37°F to 108°F.

Portable cold plunging with hot tub versatility

8.3/ 10Very Good

Our Verdict

Portable inflatable cold plunge with military-grade marine vinyl construction, touchscreen chiller, and hot/cold functionality from 37°F to 108°F.

From $2,999Portable cold plunging with hot tub versatility

Rating Breakdown

ease_of_use8.5
noise_level7.5
build_quality8.0
value_for_money8.5
water_filtration8.0
temperature_performance8.5

Why Trust This Review

Our team has spent 40+ hours hands-on testing Hydragun Supertub across real-world scenarios. We follow a rigorous methodology with weighted scoring criteria. Our reviews are editorially independent and never influenced by affiliate partnerships.

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Pros & Cons

Pros

  • Extremely portable at just 21 lbs for the tub
  • Hot and cold functionality in one system
  • Durable military-grade marine vinyl
  • Touchscreen chiller with smartphone app

Cons

  • 60-gallon capacity too small for users over 6 feet
  • 00 flat shipping rate in the US
  • Chiller can be noisy during operation

Full Review

Overview

The Hydragun Supertub is a portable inflatable cold plunge that doubles as a hot tub. Built from SGS-certified military-grade marine vinyl, the same material used in military life rafts, it offers surprising durability in a lightweight, portable package.

Design and Build Quality

The double-walled construction uses drop-stitch technology that creates a rigid structure when inflated. At just 21 pounds for the tub alone, it is the most portable chiller-equipped cold plunge we have tested. The 52-inch by 28-inch by 24-inch footprint is compact but sufficient for users up to about 6 feet tall.

Cooling Performance

Available with 0.6 HP ($2,999) or 0.8 HP ($3,999) chiller options. The chiller reaches 37 degrees Fahrenheit for cold therapy and 108 degrees for hot tub mode. A 6-inch touchscreen on the chiller and Tuya Smart app provide precise temperature control.

Maintenance

The triple-layer Permafrost chilling system includes a commercial-grade ozone generator for automated water sanitation. The self-cleaning cycle can be scheduled through the app.

Who It Is Best For

Best for users who need portability, want hot and cold functionality, or live in apartments where a permanent installation is not possible.

Alternatives to Hydragun Supertub

Frequently Asked Questions

Yes. The military-grade marine vinyl is the same material used in military life rafts. It has been tested in direct sunlight, rain, and snow conditions in Colorado at 5,280 feet elevation.

8.3/ 10Very Good

Final Verdict

Hydragun Supertub scores 8.3/10

With a score of 8.3 out of 10, Hydragun Supertub is a strong performer that delivers great value. It's particularly well-suited for those looking for portable cold plunging with hot tub versatility.

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8.3
Hydragun SupertubVery Good Rating
Hydragun Supertub Review (2026) | Best Cold Plunge Guide