
Product Specifications
EXTERIOR
WEIGHT
HEATER
INTERIOR
ELECTRICAL
BENCH

Basswood
- Contemporary aesthetic
- Hypoallergenic
- FSC-certified
Care is taken to ensure consistency on each sauna but there can be slight variations in the color, grain, and texture of each wood compared to what is seen on our website.
You want effective far infrared to help you feel better, simply and affordably. Here's what you'll experience with a Signature sauna:
Inside the cabin, peace is palpable. Close the door and enjoy your own escape from the world for a while—an escape that gifts you with renewed energy and healing for your mind, body and spirit. You can program the 24-hour timer to have your infrared sauna therapy experience ready whenever you’d like. Enjoy a productive pause in silence or play your ultimate playlist on your premium sound system while you recover.
This model is spacious enough for the whole family (it is safe for kids), or for you to stretch out and relax with some quality alone time. Sunlighten’s SoloCarbon® heaters deliver the highest quality and quantity far infrared heat available on the market, which means you get the most effective health benefits. Our technology design mitigates EMFs to a lower level than most common household items. The air is not suffocating or harsh, it’s a gentle, comforting warmth. The Signature IV seats up to four people, the only sauna that comes with a reclining bench that can be removed to maximize room for stretching or simple yoga poses alone. Our powerful Magne-seal locking method makes assembly easy and keeps the heat in with no unsightly screws or nails. Chromotherapy lighting enhances your home sauna experience using colors from the sun’s visible light spectrum to bring balance and mental wellbeing.
Why experts trust Sunlighten
Dr. Mark Hyman, functional medicine doctor, bestselling author, and longevity expert, has trusted Sunlighten infrared saunas for over 20 years. Learn why he claims Sunlighten has the only saunas that deliver truly transformative results.
The difference 200,000+ others feel
Frequently Asked Questions

RED Light Therapy Panel
Bring nature’s healing light inside with a level of ease and elegance unlike any other. Our RED/NIR light therapy panel is more than just a device—it’s a work of art inspired by nature and crafted with the same precision and science-backed innovation we’re known for. Designed for your lifestyle, it features premium wooden frames, flexible controls, and a guided app with 20+ programs to support your unique goals. In just minutes, bask in the rejuvenating glow that transforms health and well-being from within—helping you create your most radiant, vibrant self.
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