Springbak® Springsoles Performance Insoles — US Women’s 7–12 | Patented, Made in USA

Description

Springbak® Springsoles — patented energy-return performance insoles in US women’s sizing (7/8, 9/10, 11/12). Made in the USA. $29.95 a pair.

Endorsed by championship volleyball coaches: Springsoles are just 3/32 of an inch thin and slide underneath the insole already in your shoe — no trimming, no break-in, no change in fit. The patented 1,4-polybutadiene spring plate returns the energy your foot puts into every step and jump instead of soaking it up, so the shoes you already own work like performance footwear.

Protected by four U.S. patents: 5,554,694 · 5,695,850 · 6,120,880 · 6,589,630 B1.

Force-Plate Stability Study: in force-plate testing, subjects standing on Springbak® Springsoles showed more than twice the overall resistance to being pushed from their position. In plain English: they were harder to move — better able to hold their ground against a sideways push, exactly the stability athletes need when planting, cutting, jumping, landing and absorbing contact. Results are from the force-plate testing described in U.S. Patent No. 6,589,630 B1. Individual results vary.

Endorsed by championship volleyball coaches including Hugh McCutcheon, John Cook and BYU’s Carl McGown. Full patents, lab evidence and sizing help: springbak.app/catalog/springbak-us-womens-size

More from Springbak®: the four U.S. patents · force-plate and lab evidence · athlete and coach endorsements · volleyball insoles · basketball insoles