- Pair + package
Under the insole
In a work boot
Springbak EU Size
European sizing — trim only if needed
Checking price…Springbak® Springsoles are a thin 3/32-inch performance insole layer made from resilient 1,4-polybutadiene, a material designed to compress under load and return toward its shape. This listing is sized on the EU scale (sizes 38/40, 41/42, 43/45) and fits european-sized court shoes, cleats and trainers. Place it under a removable factory liner, or on top of a firmly bonded or stitched liner. Covered by four U.S. patents and made in the USA. In a Weber State University force-plate study, more than twice the force was required to displace a standing subject on Springsoles compared with standing without them.
Sizes and availability
- Size 38 / 40Checking stockView current price on springbak.net
- Size 41 / 42Checking stockView current price on springbak.net
- Size 43 / 45Checking stockView current price on springbak.net
Tracked shipping from Springbak® — U.S. shipping $7.95. International shipping calculated at checkout.
Specifications
- Sizing standard
- EU
- Sizes
- 38 / 40, 41 / 42, 43 / 45
- Thickness
- 3/32 inch
- Material
- 1,4-polybutadiene
- Placement
- Under a removable liner, or on top of a bonded/stitched liner
- Trimming
- Only if needed — toe/forefoot only, small amounts; never the heel
- Fits
- European-sized court shoes, cleats and trainers
- Patents
- U.S. 5,554,694 · 5,695,850 · 6,120,880 · 6,589,630 B1
- Made in
- USA
- Condition
- New
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. They could hold their ground better against a sideways push—exactly the kind of stability athletes need when planting, cutting, jumping, landing, and absorbing contact.
Springbak® gives the foot a more stable, responsive platform to work from inside the shoe.
Results are from the force-plate testing described in U.S. Patent No. 6,589,630 B1. Individual results vary.
Sizing and fit questions
- Which EU size should I order?
- Order your normal EU shoe size. This listing covers EU 38/40, 41/42 and 43/45. If you fall between two ranges, take the larger one. Try it untrimmed first, then trim only the toe or forefoot in very small amounts if needed for a flat fit.
- How do these compare to other sizing standards?
- EU 42 is roughly US men’s 8.5 and UK 8; EU 39 is roughly US women’s 8.5. All four listings are the exact same patented 3/32-inch Springbak® Springsole at the same price — only the size scale printed on the package changes. The current price is shown live from our store.
- Will Springsoles fit court shoes, cleats and trainers bought in EU sizing?
- Yes. Try the Springsole without trimming first. If the factory liner is removable, remove it and place the Springsole underneath it. If the liner is lightly glued, gently pull to see whether it releases cleanly; if it does, place the Springsole underneath it. If the liner begins to tear, stretch, deform, or resist removal, stop and leave it in place. Put the Springsole on top instead. Never force out a firmly bonded or stitched liner. Try the Springsole without trimming first. Trim only if needed for a flat fit, starting at the toe/forefoot and removing a very small amount at a time. Do not trim the heel and do not unnecessarily narrow the sides. Recheck the fit after every small trim. At 3/32 of an inch, Springsoles fit court shoes, cleats and trainers bought in EU sizing with minimal added thickness.
- How do I check out and what if the size is wrong?
- Choosing a size here opens the secure Springbak® cart on springbak.net with this listing and your quantity already added. Payment, shipping and exchanges are handled there by the Springbak® team — email info@springbak.net or call 951-277-3000 and we will get you the right pair.
More evidence: patents and lab studies, coach and athlete testimonials, the full catalog.