SaunaLife Model S1B 1-Person Hot and Cold Immersion Tub in Black
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Product Information
The SaunaLife Model S1B is a modern 1-person immersion tub, finished in a deep black Thermo-Pine exterior and lined with an ergonomic fiberglass insert. Whether you're seeking a cold plunge for muscle recovery or a warm soak for relaxation, this tub is purpose-built for high-performance wellness routines.
Designed for durability and delivered fully assembled, the S1B blends striking Scandinavian aesthetics with practical recovery benefits—perfect for patios, spas, or post-sauna use at home.
Product Features
The S1B offers a refined solution for contrast therapy, recovery, and rejuvenation. Its weather-resistant black Thermo-Pine exterior is not only eye-catching but also outperforms cedar in longevity.
Inside, the contoured fiberglass insert ensures complete comfort during immersion, whether you’re soaking in icy cold water or enjoying the warmth of a hot tub.
Black Thermo-Pine Exterior
Hot & Cold Immersion
Contoured Fiberglass Insert
Eco-Conscious Materials
Ships Fully Assembled
SaunaLife S1B Immersion Tub Highlights
Dual Use Functionality:
Designed for both cold plunges and hot immersions—ideal for contrast therapy and daily recovery.
Black Thermo-Pine Exterior:
Modern matte-black wood exterior resists moisture, warping, and weather better than traditional cedar.
Comfort-Centric Interior:
Ergonomically molded fiberglass insert comfortably supports one adult for deep, restorative soaks.
No Assembly Needed:
Ready to use out of the box—simply connect optional chiller/heater systems and fill with water.
Space-Saving, Efficient Design:
Compact footprint with a 124-gallon capacity, plus matching Thermo-Pine stairs for safe, easy access.
European Craftsmanship:
Handcrafted in Northern Europe, combining timeless design with performance-grade materials.
What’s Inside the Box?
SaunaLife Model S1B Cold/Hot Immersion Tub – Black Edition
- Pre-assembled 1-person immersion tub
- Black Thermo-Pine stairs for safe access
- Built-in drainage system with tap
- Molded ergonomic fiberglass basin
- Stylish matte-black exterior finish
Engineered for Wellness & Style
The SaunaLife Model S1B fuses modern design with performance-grade materials, providing a restorative escape for hot or cold immersion in a compact, elegant form.
Hot or Cold Ready
Alternate between warm soaks and invigorating cold plunges for enhanced circulation, recovery, and stress relief.
Supportive Interior Mold
Deep contoured fiberglass shell hugs the body to promote posture and relaxation during use.
Weather-Resistant Thermo-Pine
Pressure-treated wood exterior offers better outdoor resilience and longevity compared to cedar.
Zero Assembly Required
Delivered pre-assembled—just place, fill, and plunge. No tools, no installation, no hassle.
About SaunaLife
SaunaLife makes high-quality, affordable saunas with sustainably sourced Scandinavian wood.
Partnering with Nordic innovators, they craft durable, beautiful indoor and outdoor saunas that blend tradition and modern design.
SaunaLife collaborates with respected resellers and constructors to bring these saunas to market.
Why Choose Us?
Choose Peak Primal Wellness for a personalized, community-driven approach to health. We prioritize your well-being with high-quality products, tailored solutions, and 24/7 support.
As a family-owned business, we build lasting relationships, offering authentic, effective solutions to help you achieve your wellness goals.
Join our thriving community and embark on a journey toward optimal health with passionate professionals who genuinely care. At Peak Primal Wellness, you're not just a customer—you're family.
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Specifications
| Brand | SaunaLife |
| Model | Model S1B (Black Edition) |
| Exterior Finish | Weather-Treated Black Thermo-Pine |
| Interior Tub Dimensions | 34.4" Diameter × 36" Depth (87cm × 91cm) |
| Overall Dimensions | 40" Diameter × 41.3" Height (102cm × 105cm) |
| Water Capacity | 124 Gallons |
| Filled Weight | 1,177 lbs (534 kg) |
| Packaging Size | 47.8" L × 46" W × 48.1" H (121cm × 117cm × 122cm) |
| Shipping Weight | 265 lbs (120 kg) |
Warranty & Returns
Return Policy
To request a return or refund, customers can use our contact form, email info@peakprimalwellness.com, or phone – (877) 689-4898 . Once the product is inspected and confirmed to be in brand new condition, we will initiate the refund, which typically takes 5–7 business days to post back to the original payment method. Refunds can be applied via the customer’s preferred method, including card or bank transfer. Shipping instructions and the return address will be provided upon contacting customer service. Please include photos if the product arrives damaged. Click here to view our complete return policy for more details.
Shipping Policy
Customers may contact us by phone or email anytime to inquire about the status of their order. While we may not always have a tracking link available before the order ships, we are happy to check its current status for you. If an item is never received, please contact us immediately. We will promptly file a claim on your behalf and ship a replacement to ensure you receive your product as soon as possible. Click here to view our complete Shipping policy for more details.
Frequently Asked Questions
What materials are used for the exterior of the Model S1B?
The S1B features a Thermo-Pine wood exterior finished in matte black. This thermally treated timber offers outstanding weather resistance, visual appeal, and longevity—perfect for year-round outdoor use.
How long does it take to get the tub ready for use?
Filling the 124-gallon tub typically takes 20–30 minutes with a standard garden hose. If using a heater or chiller, temperature adjustment generally takes 30–90 minutes depending on your desired result.
Is the S1B intended for just one user?
Yes. The Model S1B is ergonomically designed for individual use, ensuring maximum comfort and immersion depth for personal wellness, athletic recovery, and spa-like solitude.
Can I alternate between hot and cold sessions?
Yes, this model supports both hot and cold immersion. The fiberglass tub is compatible with external chillers and heaters, making it perfect for contrast therapy or temperature-based recovery routines.
Is any assembly required when it arrives?
No assembly is required. The S1B is delivered as a fully built unit—just place it in your preferred location, hook up your chiller or heater if desired, and it’s ready to fill and use.
What accessories or components come with the S1B?
The S1B package includes the black fiberglass insert, integrated drain, black Thermo-Pine access steps, and pre-installed ¾" NPT plumbing ports for convenient heater or chiller attachment.
