Springbak
Sprinter driving out of the blocks, spikes loaded against the track

Springbak® Springsoles

Explosive play starts beneath your feet

Springsoles are patented, 3/32-inch energy-return insoles that slide under the insole already in your shoe or cleat — no break-in, no bulk, no change to your fit. One pair, $29.95, made in the USA.

Why Springsoles work

Energy return, not cushioning

A thin resilient layer gives your feet something to push into, so force you already produce comes back instead of dissipating into the shoe.

Grounded balance

In force-plate testing at Weber State, it took more than twice the force to displace a person standing on Springsoles.

Four U.S. patents

5,554,694 · 5,695,850 · 6,120,880 · 6,589,630 B1 — the mechanism is protected, documented and made in the USA.

Full lab detail and the patent record live on the patents page and the proof page.

Made in the USAManufactured in the United States

Springsoles are made in the USA and shipped direct — there is no dealer network, no middleman markup and no storefront, which is how a patented performance product stays at $29.95 a pair. Every order ships from us to you.

Comparing us with carbon fiber plate insoles? Read the Springsoles vs VKTRY breakdown.

Not sure which size or how they install?

Send us your sport and the shoes you compete in. We'll answer with sizing and install notes — usually the same day.

Tell us what you play in

Send your sport and footwear and we'll confirm sizing and fit before you order.

No newsletter, no resale of your details — we answer your question and that's it.

The receipts

Patented. Force plate tested.

See the patents and the studies

Patents

  • 4

    U.S. patents

    Nos. 5,554,694, 5,695,850, 6,120,880, 6,589,630 B1 — performance-enhancing athletic shoe components and methods.

    Read the patent family

Force plates

  • 2×+

    Force to displace

    Force plate testing at the Weber State University Human Performance Laboratory: more than twice the force was needed to push subjects off balance on Springsoles.

    See the force plate data
  • Balance

    & stability study

    Evaluated with Dr. Michael Yessis, Dr. Robert Wiswell and Howard Gray, PhD — stability and functional strength, measured rather than claimed.

    Read the study