Zelus Triple Threat

We engineered a line of insoles that can help prevent injuries AND improve performance AND reduce pain.
Zelus Insoles are a combination of SmartCells Cushioning fused with custom orthotic components to create an insole unlike any other.


Our insoles are strategically designed for healthy feet (and bodies) that would like to remain that way. Sure, you feel good now, but does that mean you should just be content and sit around and wait for a painful problem to arise?

Like getting an oil change for your car; taking preventative measures for your feet will help decrease issues in the future. Plus, our SmartCells Technology offloads up to 20% of the impact force you put in, providing your body an out of this world, next-gen cushioning that your feet will thank you for.


Our insoles are specifically engineered with design elements and materials taken right from a high-class, fully functional orthotic — just like the ones trainers give to their athletes AND doctors give to their patients.

By leveraging the deep orthotic roots of Fastech Labs, we have developed an unmatched off-the-shelf prefab solution to support your feet where they will function best. And when your feet are correctly in place, there is no stopping you from performing at your highest possible level.


Our insoles are constructed with a cushioning system unlike anything else on the planet. There is literally no other insole that has the ability or capability to give you the Zelus level of comfort. It’s all thanks to our patented SmartCells Cushioning.

When you have the best anti-fatigue, impact-absorbing tech in your shoes, to say that your feet will feel amazing would be an understatement. Plus, with our varied and unique lineup of insoles, reaching unmatched levels of pain-reduction has never been easier.



30 day satisfaction guarantee


SmartCells® Cushioning Technology
Our patented SmartCells form a layer of zingy spring-like cushioning under your feet. They are designed to absorb impact and return energy back to you — full propulsion, baby!

Custom Orthotics in our DNA
Designed by Fastech Labs, with over thirty years of experience working with medical professionals and the best athletes on the planet. They provide foot support to everyone from tennis legends and World Series Champs, to Gold Medalists and Hall-of-Famers.

Zelus Triple Threat
Zelus Insoles support your feet correctly. When your feet are supported, you limit the risk of pain or injury, allowing you to perform your best. When you perform your best, you win at life. Zelus = winning.

The Winning Touch: Durable Zelus EVA Top Cover
We know that to be a champion you can’t afford leave anything on the table. This is why we designed the Olympus Lineup with durable Zelus EVA top covers, so they can last as long as you can.



SmartCells Cushioning

Embedded in high impact areas to help reduce impact


Impact Absorption

SmartCells absorb up to 20% of impact and return energy


Custom Orthotic DNA

Built with the same components as custom orthotics


Supreme Arch Support

Orthotic grade arch support for support and proper alignment


Built to Last

Built with the highest quality materials around


Crafted in the U.S.

Each pair of insoles is handcrafted here in the U.S.A.

Notice: Orders will be shipped within 48 hours of purchase.