Different on purpose. Better by design.

Air Powered Shoe Inserts

We'll be honest. Your first step feels strange...Your second feels better. By the third, we bet you'll never go back.

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We're Tired of Cheap Insoles, and Your Feet Are Too.

Big Shoe has been giving you $1.00 insoles for decades. Foams and gels are cheap shortcuts. We're building something better. Durable, air-powered inserts that are made for you.

Pneumatics: compressed air creating force and motion

Numadx inserts are a new take on shoe inserts, made of pressurized air chambers, that act to to distribute the force behind each step. Pretty cool right?

Each insole is specifically designed for the way you move. Originally developed and used for protective equipment in the military and the NFL, and now available for you.

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Our Products

Relieve Pain. Rediscover Comfort.

Product image of Alleviate Series Insert - Relieve Pain. Rediscover Comfort.

Alleviate Series Insert

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$74.99

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Relieve Pain. Rediscover Comfort. All-day relief that gets better with time. The Alleviate Series delivers superior comfort, impact absorption, and...

Made for People Who Stand All Day

Pressure Tuned To You

Made to Order

30 Day Guarantee - No Questions Asked

There are 5 products left

In Stock. Ships by Tue, Apr 01, 2025

Comfort That Moves With You

Product image of Commute Series Insert - Comfort That Moves With You

Commute Series Insert

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$49.99

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Comfort That Moves With You Designed for on-the-go lifestyles, the Commute Series brings lightweight, all-day comfort to your everyday footwear. Wh...

Made for Commuters

Fits In (Almost) Any Shoe

Made to Order

30 Day Guarantee - No Questions Asked

There are 5 products left

In Stock. Ships by Tue, Apr 01, 2025

Testimonials

Amazing experience! I'm a nurse and on my feet quite a bit. Since using Numadx inserts, my feet feel so rested at the end of the day. These inserts are so bouncy and comfortable like you're walking on air! I love love them!!

- Debbie, Nurse

I have hip and back problems, but I’ve noticed an amazing difference wearing Numadx, particularly when I’m standing for long periods of time in the operating room, even compared to the expensive running shoes I have worn. I plan to get a set for all my shoes

Dr. Philip, Neurosurgeon

Actual science with actual relief. I work on healthcare and I can't believe my foot pain is actually relieved! I thought there was no hope even after seeing a podiatrist to address the issue. Now I look forward to putting on my shoes

- Clay, Healthcare Technician

My Numadx inserts have been instrumental in relieving pain and discomfort that I've struggled with for years stemming from off-and-on runner's knee. They are a perfect combination of firm and supportive (not too squishy) as well as bouncy and reactive.

- William, Runner

Try Numadx to feel pure joy in your feet throughout the day.

- David, Athlete

Developed in the lab, and tested in the field.

Serious Science That's Weirdly Comfortable.

Air cells. Energy transfer. Impact absorption. We'll sweat the science.

For you, it's more support, more energy, and just feeling better with every step.

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Step Into Comfort

Hey, can we say something real quick?

This is new. Like..."what did I just put in my shoes?" new.

When you first step into Numadx, it might feel weird. Not bad-weird — more like “Whoa, I’ve never felt this before” weird. That’s because you haven’t. Our inserts use pressurized air, not foam or gel, so they feel lighter, springier — almost alive under your feet.

Here’s our promise: 
  1. We’ll always be honest. This is new, and we’re still learning. 
  2. If you’re not happy in the first month, we’ll cover return shipping, no questions asked.

We’re not just making a product; we’re building a community that’s cool with trying something different in the pursuit of moving better. 

Thanks for stepping into the unknown with us. 

— Numadx