The first insole built for feet that can't feel when their support has failed.
Load-rated for 200–350 lbs.
Up to 50% off the founding offer, free shipping, and a 120-day money-back guarantee. The Foundation holds its shape under 200–350 lbs and spreads your weight across the whole sole, every single step. Rated 4.9 by 2,400+ customers.
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Burning by noon. Hot gravel on every hard floor. And the evening is the worst part.
The first step out of bed hits like broken glass. By the middle of the day the soles are burning. You check the ground with your eyes before you trust your step, because your feet stopped telling you the truth a while ago.
You did what you were told. You watched your sugar. You bought the cushioned shoes. You tried the gel inserts, the memory foam, the ones with "heavy duty" on the box. Each one felt fine for a week or two. Then the burning came back, and the evenings got longer.
So you started planning your life around a chair. The grocery store became a job. Church, the ball game, the walk after dinner, all of it got shorter or got skipped.
Here is what nobody said out loud. Your nerves are one problem, and that one stays between you and your doctor. But there is a second problem under your feet, a mechanical one, and that one has a fix you can order tonight.
"You've been told the problem is your nerves and your weight. Part of it is. The other part is the foam under your foot, which was built for a body half your size and collapsed weeks ago. Nobody looked down."
None of it changes what your foot lands on.
- The pills quiet the nerve signal so you feel less of the burn. They don't stop the impact, and they don't hold any weight
- Gel insoles from the pharmacy — compressed into nothing within days
- Memory foam insoles — molded once, then stopped bouncing back
- Just buying new, expensive shoes — same result, more money wasted
- Custom orthotics — $400, a waiting list, and still told to lose weight
None of these are wrong, and nobody is telling you to stop any of them. But every one of them is trying to quiet the nerve while the impact that fires it keeps landing, step after step, on a surface that already gave up.
And every day on that surface is a day of your full weight landing on three points of a foot that can't report it.
That impact is the part you can change. Here is why it happens.
The insole aisle was built around one body. It isn't yours.
Every insole on the market is built around one assumed body: 130–170 lbs. The foam density, the arch height, the heel cup — all calibrated for that weight. Putting that foam under a heavy body is like putting car tires on a dump truck. It isn't a question of whether it fails. It's a question of when.
When you weigh 240 lbs, you put 67% more force through that foam with every single step. Standard foam hits what engineers call compression set — the point where it stops springing back. For a 150-lb person that takes months. For a 250-lb person: 3 to 6 weeks. The insole looks fine. But it's dead.
In a healthy foot you feel the support go. You shift your weight, you sit down, you buy new insoles. A foot with damaged nerves sends no warning. It keeps walking on dead foam for weeks, and your weight funnels into the few points where structure remains. Two failures, compounding quietly.
Illustration. Spreading pressure so that no single point carries it is what the guidelines for the diabetic foot aim at through footwear and insoles.
None of this is your fault. Nobody prints a weight rating on an insole box, so nobody could tell you the foam under you had a limit, and that you passed it on day one.
Load-rated structure. A foundation that holds its shape under you, so the load spreads instead of stacking up.
Instead of asking foam to do a job it was never rated for, The Foundation gives the foam something to stand on. Think of the frame under a mattress. The foam cushions. The frame keeps the foam from collapsing. Three parts, each doing one job:
- High-density foam, 45–60 kg/m³ instead of the standard 25–35, so it doesn't pack down under a heavy body
- A rigid TPU shell under the foam, so the arch can't cave and the foam can't bottom out
- A 16mm deep heel cup, so the heel can't slide sideways and channel the force into one point
Once that structure holds, every step changes. Instead of three points of your foot taking all the impact, the whole sole shares it. The heel is cradled. The arch is supported. The ball of the foot isn't grinding into the floor.
Standard EVA foam: 25–35 kg/m³. Rated for 130–170 lbs. The Foundation: 45–60 kg/m³ high-density polyurethane foam over a rigid TPU structural shell, engineered for 200–350 lbs. Higher density means higher collapse stress — so it holds its structure through months of hard daily wear instead of flattening in weeks. Backed by our 120-day money-back guarantee.
That is the whole idea behind the guidelines doctors use for a diabetic foot: spread the pressure so that no single point carries it. We built an insole that does it for a body the rest of the aisle gave up on.
The first insole with a load rating for your body.
Not more cushioning. Not a different shape. The same insole concept — finally engineered to the correct specification for your weight range.
45–60 kg/m³ foam density
Rated for 200–350 lbs daily use. Holds structure. Doesn't compress flat.
16mm deep heel cup
Standard is 10–12mm. Distributes heel impact across the full heel, not a single pressure point.
Load-rated arch support
Engineered not to flatten under 250+ lbs. Most arch supports collapse under this weight in weeks.
Dual-layer TPU construction
Rigid TPU base shell provides structural support independent of foam. Dramatically extends lifespan.
| Feature | The Foundation | Standard insole |
|---|---|---|
| Foam density | 45–60 kg/m³ | 25–35 kg/m³ |
| Weight rating | 200–350 lbs | Not rated |
| Heel cup depth | 16mm | 10–12mm |
| Holds up at 250 lbs | Months of daily wear | 3–6 weeks |
| TPU structural shell | ✓ | ✕ |
| Money-back guarantee | ✓ | ✕ |
Remove your old insole. Drop this one in.
That's it. Trim to fit if needed. Works in work boots, sneakers, and most casual shoes. Takes 30 seconds.
"It gave me back parts of my life I thought were gone."
"I work on a concrete flightline ten hours a day. For about two years, the arch of my right foot was a constant source of pain. I'm 5'8", about 280, and 64 years old. I'd tried everything — two foot doctors, the worthless molded inserts, a dozen different shoes, five or six drugstore inserts. The ones that even helped self-destructed in twelve to fourteen days."
"I wore these all day the first day, but I carried a backup pair in my work bag just in case. By the middle of the second week, I found myself not thinking about my feet at all. I was stunned. That weekend I cut tree roots out of the yard and worked under my truck — six hours straight, both days. Work that had become impossible without breaks every half hour."
"I'd thought my age had been creeping up on me. Being almost pain-free was dragging me down that path. These gave me back parts of my life I thought were gone for good. I've been telling the big guys I work with about Solbase."
Steven W., Avionics Technician, 280 lbs · Verified buyer
Real customers. Their own camera. Their own words.
No actors, no script. Three men who had already tried everything, filming their honest take a week and a half into Solbase.
"I've been in manufacturing 25 years — 8 to 12 miles a day on a 12-hour shift. By day two my feet were killing me, and my orthopedist told me to get an insert with real structure. I've tried Dr. Scholl's, Superfeet, a bunch of others — the heel cups always break down. Two weeks in, these are holding up really well. Probably the best I've seen."
"I had plantar fasciitis pretty severely — podiatrists, shots, every insole I could find. Solbase is very sturdy and very comfortable, and I feel like they're really going to last. They've worked well for me, and I believe they'll work well for you too."
"I spent quite a bit of money on over-the-counter arches, custom-made arches, quality shoes — and nothing has really helped. Yours do."
Your first 120 days
You were told to manage your sugar and wait.
The surface under your feet doesn't have to wait.
Engineered for 200–350 lbs. 120 days to find out — full refund if it doesn't hold up.
Get The Foundation — 120-day guaranteeBefore you buy
Why people with neuropathy and diabetes already buy it
These are answers to one question, "In your own words, why did you buy Solbase?", given at checkout. They are not reviews and they promise nothing. They show who this insole is already going to.
"To help with diabetic neuropathy."
Machinist · 55–64 · 300–350 lbs · foot pain for 5+ years · 5+ insoles tried before"I weigh 340 lbs and need an insole for arch support and to lengthen the life of my shoes, wearing size 13 wide. Also, I am Type 2 diabetic and vulnerable to pressure wounds in my big toes that a firmer insole will help with."
Verified buyer · 340 lbs"I have neuropathy and bad knees and a bad lower back."
Verified buyer"Because I work on my feet all day long and I'm diabetic and my feet and legs are so sore."
Verified buyerReviewed by a retired chiropractor
with 30 years of practice
"I've used orthotics of many different types, including types that I've made through my own office. Frankly, none of them compare to the effects I'm getting from Solbase."
Lew A., Retired Chiropractor · 30 years of practice · Verified buyer
What they say in the comments
Real, unedited comments under our Facebook ads — the kind we never asked for. Someone raises a doubt, and the people already wearing them answer it.
Screenshot from the comments on our Facebook ads