Frequently Asked Questions
Find answers to the most common questions about the NerKai Guardian recovery kit, usage instructions, shipping, and our risk-free guarantee.
How does the NerKai Guardian work?
The NerKai Guardian combines 3 clinically proven recovery therapies: targeted red light therapy, adjustable thermal heat, and high-frequency micro-vibrations. Together, these technologies penetrate deep into joint tissues to stimulate micro-circulation, relieve joint stiffness, and support faster cell regeneration.
How often and how long should I use it?
For optimal results, we recommend using the device for 10 to 15 minutes per session, 1 to 2 times daily. Most users experience noticeable joint comfort, warmth, and increased mobility within their first week of consistent daily use.
Is it safe to use with arthritis or after joint discomfort?
Yes. Non-invasive red light and heat therapy are widely recognized for helping ease chronic stiffness, arthritis symptoms, and post-workout soreness. However, if you have recently undergone knee surgery or have specific medical conditions, we always recommend consulting your healthcare provider prior to use.
Does it fit all leg sizes?
Yes, the NerKai Guardian features ergonomic, fully adjustable Velcro straps designed to securely and comfortably fit all leg sizes. It can be worn directly against the skin or over lightweight pants and leggings.
What is your 30-Day Money-Back Guarantee?
We want you to try the NerKai Guardian completely risk-free. If you do not experience noticeable joint relief after using it for 30 days, simply contact our support team at contact@nerkai.com and we will issue a full refund—no hassle, no stress.
How long does shipping take?
Orders are processed within 24 to 48 business hours. Standard delivery typically takes between 5 to 10 business days depending on your destination. A tracking link will be automatically sent to your email as soon as your order ships.