Insoles for lifting, plyometrics and conditioning volume
Most of an athlete's total foot contacts happen in training, not competition. Springbak® Springsoles go under the insole of your trainers so the weight room, plyo work and conditioning all get the same resilient layer your game shoes do.
What strength & training demands of your feet
- Plyometric landings — the highest-force reps of the week
- Jump rope, sled work and conditioning volume
- Long lifting sessions standing on hard rubber flooring
- Back-to-back training days with limited recovery
Why Springsoles fit this sport
Highest-volume protection
You train far more than you compete. Reducing shock across those contacts is the biggest total-load win available.
Consistent feel
The material recovers between reps rather than compressing flat like foam over a training block.
Works in any trainer
Anything with a removable insole — cross trainers, running shoes, weightlifting shoes.
The technology, materials and four U.S. patents behind Springsoles are detailed on How it works.
On the record
What athletes and coaches say about Springsoles
Published endorsements from a Pro Football Hall of Fame cornerback, NFL and collegiate coaches, and the biomechanics researchers who tested the material. Individual results vary.
“I can run faster, jump higher, and have less fatigue. I would highly recommend Springbak® Springsoles to enhance athletic performance.”
Weber State force plate testing
What the force-plate result means on the track
Weber State University human-performance lab testing showed it took more than twice the force to displace a person standing on Springsoles. For a sprinter, that matters at ground contact: the material resists collapse under the short, high loads of a block start, jump plant or hurdle touchdown, returning energy instead of absorbing it like foam.
- More stable foot platform through the drive phase of a sprint.
- Less deformation means the spike plate and pin angle stay as you trained them.
- The same resilience shows up across thousands of tempo reps, not just one max-effort rep.
See the full breakdown on Proof & testing.
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.
Fitting them to your strength & training footwear
- 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.
- 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.
- For heavy squats and deadlifts, confirm the Springsole lies completely flat so nothing shifts.
- The same pair works for plyometrics, conditioning and warm-ups.
FAQ
Strength & Training insoles — frequently asked questions
Should I lift in them?
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Plenty of athletes do. The 3/32" profile is thin enough to keep you stable while still giving you a resilient layer for jump and conditioning work.
How long does a pair last?
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The material is chosen for resilience rather than foam-style compression, so a pair holds its properties through heavy training use.
Are Springsoles good for running and conditioning?
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Yes. Many athletes run their conditioning in the same pair they lift in — the material returns energy on each contact instead of flattening out.
Should I use them for plyometrics specifically?
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Plyos are the highest-force reps of your week, so that's exactly where a resilient layer earns its keep.
Can I use them for standing and coaching all day?
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Plenty of coaches do. The comfort benefit on hard gym floors is the same benefit athletes get on landings.
The gear
Buy Springbak® Springsoles for Strength & Training
Every pair of Springbak® Springsoles is 3/32 of an inch thick and made in the USA, at the live price shown on each card. Pick your size and quantity, and "Add to cart" hands you to the secure springbak.net checkout with that exact pair already in the cart.
Press Enter or Space to open the enlarged product image in a dialog. Use the left and right arrow keys on the thumbnails below to change image.
Showing image 1 of 3: Pair + package
Springbak US Men's Size
US men's sizing — trim only if needed
Checking price…Checking stock
QuantityWe could not confirm size 6 / 7 just now.
View current price on springbak.netUS men's questions
Which US men’s size should I order?
Order your normal US men’s shoe size. This listing covers US men’s 6/7, 8/9 and 10/11. 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?
US men’s runs roughly 1.5 sizes below US women’s and about 33 sizes below EU (US men’s 9 ≈ EU 42.5 ≈ UK 8). 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, trainers and work boots?
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, trainers and work boots 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.
Press Enter or Space to open the enlarged product image in a dialog. Use the left and right arrow keys on the thumbnails below to change image.
Showing image 1 of 3: Pair + package
Springbak US Women's Size
US women's sizing — trim only if needed
Checking price…Checking stock
QuantityWe could not confirm size 7 / 8 just now.
View current price on springbak.netUS women's questions
Which US women’s size should I order?
Order your normal US women’s shoe size. This listing covers US women’s 7/8, 9/10 and 11/12. 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?
US women’s runs about 1.5 sizes above US men’s (US women’s 9 ≈ US men’s 7.5 ≈ EU 40 ≈ UK 6.5). 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, trainers and boots?
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, trainers and boots 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.
Press Enter or Space to open the enlarged product image in a dialog. Use the left and right arrow keys on the thumbnails below to change image.
Showing image 1 of 3: Pair + package
Springbak EU Size
European sizing — trim only if needed
Checking price…Checking stock
QuantityWe could not confirm size 38 / 40 just now.
View current price on springbak.netEU 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.
Press Enter or Space to open the enlarged product image in a dialog. Use the left and right arrow keys on the thumbnails below to change image.
Showing image 1 of 3: Pair + package
Springbak UK Size
UK sizing — trim only if needed
Checking price…Checking stock
QuantityWe could not confirm size 5 / 6 just now.
View current price on springbak.netUK questions
Which UK size should I order?
Order your normal UK shoe size. This listing covers UK 5/6, 7/8 and 9/10. 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?
UK sizing runs about 1 size below US men’s and 5 sizes below EU (UK 8 ≈ US men’s 9 ≈ EU 42.5). 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 boots, trainers and court shoes?
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 boots, trainers and court shoes 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.
Shop now
Add Springsoles to your cart
Every size is one pair of Springbak® Springsoles for strength & training — 3/32 of an inch thick, made in the USA, and they go under the insole already in your shoes. Pick a size below and it drops straight into your springbak.net cart.
Springbak US Men's Size
US men's sizing — trim only if needed
Checking price…Springbak US Women's Size
US women's sizing — trim only if needed
Checking price…Tracked shipping from Springbak® — U.S. shipping $7.95. International shipping calculated at checkout.
Not just for competition
Balance and stability off the court
The same patented material shows up in stability testing, not just performance testing. On a force plate at Weber State University it took more than twice the force to push a person off the plate while standing on Springsoles. If you or a parent are on your feet all day, read Springsoles for seniors: balance and stability all day on your feet. And if you play the fastest-growing court sport in the country, see pickleball insoles for court shoes and hard-court play.
Want the grounded-stance answers — how the force-plate result translates into balance, base of support and functional strength? Read the Springbak® balance and force-plate proof.
Train for strength & training
In-Season Strength
Two days a week to keep what you built in the off-season, without stealing anything from Friday night.
Open programOff-Season Total Athlete
Twelve weeks that rebuild the whole athlete — strength, speed, jump and conditioning — in one coherent plan.
Open programFootball Lineman Power
Eight weeks of first-step force, pad-level strength and short-area drive for athletes who win or lose a rep in one second.
Open program
Strength & Training reading from the Performance Desk
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Athletes in these sports face overlapping demands — same plant, same landings, same need for energy return.
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Shop
Springbak® Springsoles insoles
One model, every size, made in the USA.
Springbak® insolesFootball
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Springbak® football insoles add a thin 3/32-inch resilient layer for football cleats. Check cleat fit, sizing, installation and the Weber State standing test.
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Every Springbak® sport page in one place.
All sport insoles
Recommended next steps
Start the In-Season Strength block
Two days a week to keep what you built in the off-season, without stealing anything from Friday night.
Open programSee the patented technology
The 3/32-inch profile, 1,4-polybutadiene resilience and the four U.S. patents behind Springsoles.
How it worksTrack your progress
Log vertical jump and sprint times so you can see what this block actually changed.
Open athlete toolsGet Springsoles for strength & training
Pick your size and check out on springbak.net, made in the USA.
Shop Springsoles
All other sports
Springbak® — MADE IN THE USA. Individual results vary.
Last updated 2026-08-26.