Cold. Accessible. Built for daily recovery.

The Golden Designs Cuboid Cold Plunge Tub delivers the full cold immersion experience in a well-crafted, weather-resistant package. With a durable PVC interior known for its excellent insulation properties and a nano-coated stainless steel cabinet trimmed in Pacific Cedar, this tub is designed for both indoor and outdoor use — and built to hold temperature efficiently session after session.

At 50"L × 30"W × 31.5"H overall with a 43.5"L × 24"W × 28.5"H interior, the Cuboid provides comfortable space for full-body cold immersion. The Pacific Cedar step ensures safe, easy entry and exit, while the custom cover with child safety latches keeps the tub secure when not in use. The optional chiller (sold separately) can cool the water down to 37°F and also offers a heat function — giving you full temperature control year-round via WiFi app.

Cold water immersion is one of the most evidence-backed recovery modalities available — accelerating muscle recovery, reducing inflammation, boosting circulation, and supporting overall well-being. The Cuboid makes it a daily practice.

Please note: A chiller is required for cold water temperature control and is sold separately. This listing is for the tub only.

Features & Specifications

• Interior: PVC — excellent insulation, durable, easy to maintain
• Exterior: Nano-coated stainless steel cabinet with Pacific Cedar trim
• Overall dimensions (L×W×H): 50" × 30" × 31.5"
• Interior dimensions (L×W×H): 43.5" × 24" × 28.5"
• Entry: Pacific Cedar step included
• Cover: Custom cover with child safety latches included
• Chiller (optional, sold separately): Cools to 37°F / 3°C, heat function included, WiFi app control, 0.8–1.0 HP, 1-year warranty
• Use: Indoor or outdoor
• Warranty: 1-year limited warranty

Frequently Asked Questions

Does the Cuboid come with a chiller?
No — the chiller is sold separately. This listing is for the tub only. The optional Cold Therapy Premier Chiller (0.8 HP, WiFi app control) cools the water to 37°F and also includes a heat function for warm water therapy. We strongly recommend adding the chiller to your order for full temperature control — without it, you'll need to manually add ice to cool the water.

What is the difference between the Cuboid and the Cuboid XL?
The Cuboid has a PVC interior and measures 43.5"L × 24"W inside at $4,999. The Cuboid XL features a 304 nano-coated stainless steel interior for superior durability and a larger footprint. Choose the Cuboid for a more accessible price point; choose the Cuboid XL if you want a premium stainless interior and more interior space.

Why PVC interior instead of stainless steel?
PVC is an excellent insulator — it retains cold water temperature more efficiently than stainless steel, which conducts heat. For cold plunge use, this means the Cuboid maintains its target temperature longer between chiller cycles, reducing energy consumption. PVC is also non-reactive, easy to clean, and resistant to corrosion.

What are the benefits of cold water immersion?
Cold water immersion (CWI) is one of the most evidence-backed recovery modalities available. Regular cold plunging reduces muscle soreness and inflammation, accelerates post-workout recovery, boosts circulation, supports immune function, and triggers norepinephrine release — a neurotransmitter associated with improved mood, focus, and energy. Many users report significant mental clarity and stress reduction with consistent practice.

What temperature should I set for cold plunging?
Most cold therapy protocols recommend 50–59°F (10–15°C) for general recovery and wellness. More advanced users may go as low as 37–45°F. The optional chiller cools to 37°F, giving you full control over your target temperature. Start warmer and work your way down as your body adapts.

Can the Cuboid be used outdoors year-round?
Yes. The nano-coated stainless steel exterior and Pacific Cedar trim are both weather-resistant and suitable for outdoor installation. In freezing climates, the chiller's heat function can prevent the water from freezing and maintain a consistent temperature year-round.

How do I maintain the Cuboid?
Regular water treatment (similar to a hot tub) is recommended to keep the water clean between sessions. The PVC interior is easy to wipe down and non-porous. The cover with child safety latches keeps debris out when not in use. Drain and refill the tub periodically based on usage frequency.

How is the Cuboid delivered?
The Cuboid is delivered curbside via freight. Please ensure adequate access for freight delivery and have assistance available to move the tub to its final location. No electrical connection is required for the tub itself — the optional chiller requires a standard electrical outlet.

Why Havenscape Outdoors

At Havenscape Outdoors, we believe recovery is part of the performance. The Golden Designs Cuboid is built for those who want a premium cold plunge experience without compromise — at a price point that makes daily recovery accessible. Shop with free nationwide shipping and Shop Pay Installments available at checkout.

Delivered curbside. Contact us to coordinate your delivery window.

Complete Your Contrast-Therapy Space

Cold immersion is only half the equation. Pair this cold plunge with a sauna to build a complete contrast therapy ritual — heat your body deeply, then plunge. The cycle between extremes is where recovery, clarity, and resilience are built.

Recommended sauna pairings:

• Orivon Wellness Auris Two 3–4 Person Outdoor Sauna — Premium red cedar, traditional Finnish-style. Built for permanent outdoor installation.
• Dynamic Santorini 1–2 Person Full Spectrum Infrared Sauna — Compact infrared option ideal for indoor contrast therapy setups.
• The Visby Hybrid Sauna — Full spectrum infrared meets traditional Finnish in one unit.

Shop the full Contrast Therapy Space collection →

Upgrade Your Cold Plunge with Active Chilling

A cold plunge tub without a chiller relies on ice — which means constant restocking, inconsistent temperatures, and a lot of effort between sessions. Add a chiller and your tub becomes a true recovery system: set your target temperature, walk away, and plunge whenever you're ready.

Compatible chillers for this tub:

• Golden Designs Cold Therapy Premier Chiller — WiFi app control, dual cold & heat modes. The most capable chiller in our lineup for serious daily use.
• Lumina Cold Plunge Dual Chiller & Heater 1HP — Reliable 1HP active chilling with heating capability. Plug-and-play compatible with most cold plunge tubs.

Not sure which chiller fits your tub? Browse the full Contrast Therapy Space collection or reach out — we'll help you match the right setup.