Take charge of your recovery and wellness

Are you feeling stuck in your health and fitness journey? Cold water immersion can help you go from discouraged to empowered. Bringing together three decades of spa manufacturing experience and input from 23-time Gold Medalist Michael Phelps, Master Spas is revolutionizing the cold tub experience with Michael Phelps Chilly GOAT Cold Tubs by Master Spas.

Recovery and Performance

Reduce soreness and come back stronger

Improves Energy and Mood

Elevate your energy while lowering stress and anxiety

Encourages Quality Sleep

A change in body temperature triggers the release of hormones like melatonin

Clean, clear, cold water — 24/7

No more trips to the store for ice

Alpine Terrain

$8,495.00
As low as $89/month with 0% financing
Phoenix Swim Spas

It’s a bold idea: Water that’s cold as ice — without the ice. But with the Alpine Terrain, you can have perfectly cold, clean water on demand. Whether you are crushing it in workouts or prioritizing your well-being, the Alpine Terrain can help you be your greatest self. Recover faster, improve your immune system, relieve inflammation, sleep better, and more.

  • Teak-colored, all-weather cabinet
  • White acrylic shell
  • Grey/Black SoftTread™ Nonslip Comfort Flooring
  • Self-contained chiller
  • Temperature Range: 40° – 104° F
  • WiFi app
  • Water purification system
  • 24-hour circulation pump
  • Dual flow jets
  • LED lighting
  • Built-in seat and armrests
  • Top deck
  • 12 ft. / 15 Amp GFCI cord
  • Built-in drain
  • Dimensions: 84″ x 42″ x 30″ (214 cm x 107 cm x 77 cm)
  • Fill Volume: 120 gallons (455 L)
  • Dry Weight: 560 lbs (255 kg)
  • Full Weight: 1750 lbs (794 kg)
  • Power Requirement: 120V / 15Amp
  • Horsepower 2.1 hp
  • Jets: 2
  • LED Lighting: Yes
  • Seating Capactiy: 1

Alpine Glacier

$8,495.00
As low as $89/month with 0% financing
Phoenix Swim Spas

It’s a bold idea: Water that’s cold as ice — without the ice. But with the Alpine Terrain, you can have perfectly cold, clean water on demand. Whether you are crushing it in workouts or prioritizing your well-being, the Alpine Terrain can help you be your greatest self. Recover faster, improve your immune system, relieve inflammation, sleep better, and more.

  • All-weather cabinet in warm grey, featuring walnut undertones
  • Grey acrylic shell
  • Grey/Aqua SoftTread™ Nonslip Comfort Flooring
  • Self-contained chiller
  • Temperature Range: 40° – 104° F
  • WiFi app
  • Water purification system
  • 24-hour circulation pump
  • Dual flow jets
  • LED lighting
  • Built-in seat and armrests
  • Top deck
  • 12 ft. / 15 Amp GFCI cord
  • Built-in drain
  • Dimensions: 84″ x 42″ x 30″ (214 cm x 107 cm x 77 cm)
  • Fill Volume: 120 gallons (455 L)
  • Dry Weight: 560 lbs (255 kg)
  • Full Weight: 1750 lbs (794 kg)
  • Power Requirement: 120V / 15Amp
  • Horsepower 2.1 hp
  • Jets: 2
  • LED Lighting: Yes
  • Seating Capactiy: 1

Cold Tub Features

Michael Phelps Chilly GOAT Cold Tubs by Master Spas are built with innovative features that make it easier to enjoy the greatest in cold water immersion.

Phoenix Swim Spas

Self-contained chiller

The Chilly GOAT is more than just a cold tub — it’s a cool tub. There’s no bulky equipment or exposed plumbing. Just a sleek, modern recovery tool that will complement your space.The powerful 2.1hp chiller ensures faster cooling and heating compared to other cold tubs.

  • No equipment on the outside of your cold tub
  • Temperature range: 40 degrees – 104 degrees Fahrenheit
  • Easily control with WIFI app

All-weather cabinet

The Chilly GOAT cold tub features a durable, all-weather cabinet. Featuring a contemporary design, the cabinet is easy to maintain. It also has a sealed base for outdoor installations.

  • Indoor/outdoor durable cabinet
  • Available in 2 colors (Glacier and Terrain)

Acrylic shell

The Chilly GOAT is made with a premium acrylic, which is durable and easy to maintain.

Built-in seat and armrests

The Chilly GOAT Cold Tub was crafted with your comfort and therapy in mind. The spacious design allows for full submersion for most anybody.

  • 25-inch wide hip area
  • Perfectly situated armrests make it easier to get in and out of the tub
  • Ample leg room
Phoenix Swim Spas
Phoenix Swim Spas

Top deck

Designed to accommodate a variety of soaking positions, the Chilly GOAT allows users to enjoy targeted cold water therapy. Sit on the top deck as you submerge your legs in the cold water, which is particularly beneficial if you want to soothe sore muscles or reduce inflammation in specific areas. The top deck is also the perfect space for your robe, towel or even phone. Turn on a video or your favorite playlist to get you in the right space to chill.

SoftTread™ Nonslip Comfort Flooring

SoftTread Nonslip, Comfort Floor System offers safety and comfort with the unique combination of traction and cushion. The system is applied to the top deck, arm rests, and floor area.

24-hour circulation pump

The energy-efficient circulation pump helps keep your water clean, so you can go cold whenever you want. The pump moves the water through the filter, removing any dirt or debris.

Dual flow jets

Creating a gentle flow of water in the cold tub, the dual flow jets prevent a thermal barrier. When you are in still, cold water, a thermal layer will develop around your body to keep you warm. This thermal layer changes the temperature of the water and reduces the effectiveness of deliberate cold exposure. The dual flow jets keep the water moving, maximizing the benefits of your plunge.

Phoenix Swim Spas
Phoenix Swim Spas

WiFi app

Control your cold tub from the convenience of your phone. Using the WiFi app, you can check the status of your tub and adjust the water temperature.

Water purification system

With Chilly GOAT Cold Tubs, you can chill knowing that your water is cold and clean.

  • Cold water inhibits the growth of bacteria
  • Filter traps any impurities in your water.
  • UV lighting stops the growth of natural contaminants.

LED lighting

Built-in lighting that you can control with the touch of a button. Illuminate the tub with a range of colors for a nighttime plunge or turn it on to enhance the experience.

GFCI cord

Michael Phelps Chilly GOAT Cold Tubs use a standard 110V outlet. However, you should have a dedicated circuit breaker for the cold tub.

The cold tub comes with a 12-foot, 15-amp GFCI cord.

Built-in drain

A built-in drain makes cold tub maintenance a chill process. Easily drain your Chilly GOAT without additional equipment. Refill with clean water and get ready to chill.

Phoenix Swim Spas

Discover an immersive cold water tub that will keep you coming back for more.