M-100 Insoles. Maximum Alignment, Complete Control | Protalus
Protalus M-100 Landing Gear
Deep heel support for boots and roomier shoes.
$64.95 ~~~~/ pair
Full-length. Maximum walls. Needs approximately 7mm more room than the T-100. Fits most work, hiking, and safety boots.
- ✓Replaces the factory insole in sneakers and everyday shoes.
- ✓Aims the heel so knees, hips, and back stop compensating.
- ✓Thinner fit. Patented alignment in motion. Felt on the first step.
Full description
Protalus M-100 Insoles — Maximum Alignment, Complete Control
Clinically Studied | Heavy-Duty Support | 90-Day Risk-Free Trial
Finally, Insoles Built for Maximum Correction
The Protalus M-100 is our full-power flagship insole, engineered to deliver maximum structural guidance and keep your entire body aligned from the ground up. With ultra-deep stabilizing walls that wrap your heel and midfoot, the M-100 actively corrects overpronation, absorbs high-impact forces, and holds up under the most demanding conditions — day after day.
Key Benefits
- Maximum Alignment — Deep, stabilizing walls wrap your heel and midfoot, guiding your foot through its ideal motion sequence from heel strike to toe-off
- Clinically Proven Results — In an independent 3D motion-capture study (BioMechanica LLC, 2019), 28 of 31 participants walked within the correct mechanical range with the M-100 — compared to just 3 of 31 with a standard foam insert
- Kinetic Chain Relief — Locking your heel into its proper vertical axis reduces the misalignments that cause knee, hip, and lower back discomfort.
- Heavy-Duty Construction — Built as a high-impact foundation that withstands demanding use, whether you're on a job site or logging miles on hard surfaces
- Full Overpronation Correction — Prevents the inward rolling of the ankle that leads to compensatory stress throughout the body.
- Full-Length Coverage — Maximum walls with approximately 7mm more depth than the T-100 for superior heel and midfoot control
Who Are the M-100 Insoles For?
The M-100 is the right choice if you:
- Need maximum alignment support and a heavy-duty platform
- Wear boots, work shoes, or sneakers with a removable factory liner
- Work on your feet in physically demanding environments
- Experience knee, hip, or lower back discomfort linked to foot mechanics
- Want clinically studied results — not just cushioning
Product Specifications
- Support Level: Maximum
- Platform: Heavy-Duty, Full-Length
- Wall Depth: Ultra-Deep (heel & midfoot)
- Extra Room Required: ~7mm more than the T-100
- Best For: Work boots, hiking boots, safety boots, wide athletic sneakers
- Footwear Requirement: Removable factory liner recommended
Try Them Risk-Free for 90 Days
Slip them into your shoes and take a few steps. 95 out of 100 people keep theirs. If your body doesn't feel the difference, we'll refund every cent, no questions asked. Free shipping included.
Need a lower profile? If your shoes are too snug for the M-100, the M-75 delivers similar high-level alignment in a slimmer design.
Choose your shoe size Size guide
Type
‹
Men'sWomen's
›
Size
‹
55.566.577.588.599.51010.51111.51212.51313.514151617184.514.5
›
One-time purchase$64.95Subscribe & Save · Delivery every 6 months 30% OFF$45.47
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Add to Bag – $64.95
Returns & Shipping Protection in U.S.
“Fit and comfort are great and support is excellent.”
Size guide
Close ✕
| US Men’s |
US Women’s |
EU | Foot length (cm) |
|---|---|---|---|
| — | 4.5 | 35 | 21.6 |
| — | 5 | 35.5 | 22 |
| — | 5.5 | 36 | 22.4 |
| — | 6 | 36.5 | 22.9 |
| — | 6.5 | 37.5 | 23.3 |
| 5.5 | 7 | 38 | 23.7 |
| 6 | 7.5 | 38.5 | 24.1 |
| 6.5 | 8 | 39 | 24.5 |
| 7 | 8.5 | 40 | 25 |
| 7.5 | 9 | 40.5 | 25.4 |
| 8 | 9.5 | 41 | 25.8 |
| 8.5 | 10 | 42 | 26.2 |
| 9 | 10.5 | 42.5 | 26.7 |
| 9.5 | 11 | 43 | 27.1 |
| 10 | 11.5 | 44 | 27.5 |
| 10.5 | 12 | 44.5 | 27.9 |
| 11 | 12.5 | 45 | 28.3 |
| 11.5 | 13 | 45.5 | 28.8 |
| 12 | 13.5 | 46 | 29.2 |
| 12.5 | 14 | 47 | 29.6 |
| 13 | 14.5 | 47.5 | 30 |
| 13.5 | 15 | 48 | 30.5 |
| 14 | — | 48.5 | 30.9 |
| 15 | — | 50 | 31.7 |
| 16 | — | 50.5 | 32.2 |
| 17 | — | 51.5 | 33 |
| 18 | — | 52.5 | 33.9 |
US shoe sizes, EU sizes, and foot length in centimeters
Close ✕
90-Day Trial
Try them in your real life.
Podiatrist Recommended
Trusted by foot care professionals
Deep, Stable Support
More heel and midfoot guidance for roomier footwear.
Stop Fighting Flat Ground
Long days on hard ground call for a stable foundation inside your boots. The M-100 uses deep heel and midfoot walls to help guide alignment from landing to push-off. Its full-length construction replaces your factory liner, bringing structured support and impact absorption to work boots, hiking boots, and other footwear with room for a deeper fit.
The Details
- Gender:Men & Women
- Ideal For:Overpronation, Flat Feet, Feet Needing Deeper Support
- Use Case:Work, Hiking & Daily Wear in Roomier Footwear
Key Feature:Deep Stabilizing Heel & Midfoot Walls
Cushioning:Full-Length, Impact-Absorbing Cushioning
Length:Full-Length
Fix the landing.Comfort is what correct alignment feels like.
Pain is the knee, hip, and back paying for a heel that landed wrong. Foam mutes the hit. The M-100 changes the angle.
Typical Insole
Symmetrical
Protalus M-100
Landing Gear
| Typical Insole | Feature | Protalus M-100 |
|---|---|---|
| Low, flat edge | Heel Profile | Deep, contoured heel cup |
| Even on both sides | Side Walls | Asymmetrical by design |
| Flat under the heel | Shape | Curves around the heel |
| Cushions bad landing | Job | Controls the landing |
Fix the landing.Comfort is what correct alignment feels like.
Our patented landing gear is engineered to address:
Plantar Fasciitis
Hip Pain
Knee Pain
Comfort
Shock Absorption
Mortons Neuroma
Back Pain
Pronation
Supination
Flat Feet
What people are saying about the M-100
average rating4.6out of 5
Based on 11606 reviews
- 5 Stars
8549 Reviews
- 4 Stars
1863 Reviews
- 3 Stars
587 Reviews
- 2 Stars
302 Reviews
- 1 Star
305 Reviews
90% of reviewers would recommend this product to a friend
| Customer Service | Rated 4 out of 5 Poor Excellent |
| Price Satisfaction | Rated 3 out of 5 Poor Excellent |
| Fit | Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is Just Right and 2 is Runs Large Runs Small Just Right Runs Large |
Customer photos and videos
Filters
11606 Reviews
Sort byMost RecentOldestPhotos & VideosHighest RatingLowest RatingMost HelpfulLeast Helpful
Reason for PurchaseClear
Knee Pain
Hip Pain
Back Pain
Ankle Pain
General Foot Pain
Neuroma
Plantar Fasciitis
Neuropathy
ActivitiesClear
Everyday
Golfing
Running
Professional Athlete
Medical Professional
Team Sports
G
GraceReviewed by Grace
I recommend this product
Rated 5 out of 5
Review postedabout 17 hours ago
5 Stars
Quick shipping. Great product.
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LandonReviewed by Landon
I recommend this product
Rated 5 out of 5
Review posted17 days ago
5 Stars
Comfy
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Kim G.Reviewed by Kim G.
Verified Buyer
I recommend this product
Reason for Purchase
- General Foot Pain
- Ankle Pain
Activities
- Everyday
Rated 5 out of 5
Review posted26 days ago
Fits in my AFO perfectly!
I had to order a half size larger shoe to fit my AFO (ankle foot orthotic). But I ordered these insoles in my “normal” size since my foot really hasn’t changed. The combo is working well for me, and the structure of these insoles will hold up over time better than the “custom” insole that came with the AFO.
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| Customer Service | Rated 5 out of 5
Poor
Excellent |
| Price Satisfaction | Rated 5 out of 5
Poor
Excellent |
| Fit | Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is Just Right and 2 is Runs Large
Runs Small
Just Right
Runs Large |
Was this helpful?
0people voted yes0people voted no
PH
Patricia H.Reviewed by Patricia H.
Verified Buyer
I recommend this product
Reason for Purchase
- General Foot Pain
- Back Pain
Activities
- Everyday
Rated 4 out of 5
Review posted29 days ago
M- 100
I've had for 4 days and my feet don't hurt half as much as before. I like the insoles.
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| Customer Service | Rated 4 out of 5
Poor
Excellent |
| Price Satisfaction | Rated 3 out of 5
Poor
Excellent |
| Fit | Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is Just Right and 2 is Runs Large
Runs Small
Just Right
Runs Large |
Was this helpful?
0people voted yes0people voted no
K
KarenReviewed by Karen
I recommend this product
Rated 5 out of 5
Review postedabout 1 month ago
5 Stars
Working retail and being on my feet for up to 15 hours a day, these insoles have literally saved my life!!! I recommend these to anyone who will listen!
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EVERY STEP, GUARANTEED
90 Days to Feel the Difference. Or Your Money Back.
Your body decides. Not a review. Not a diagram. Put Landing Gear under your heel. If the landing does not change how you feel, send them back.
Frequently Asked Questions
How is Protalus different from regular insoles?
Most insoles focus on cushioning. Protalus is designed to improve alignment by stabilizing your heel and supporting your arch, helping your body move more naturally with every step.
Who should use Protalus insoles?
Anyone who spends time on their feet — from nurses and warehouse workers to runners and active adults. If you experience foot, knee, hip, or back discomfort, Protalus can help restore proper alignment.
How long does it take to feel the difference?
Most customers notice a difference within the first few days. Your body may need a short adjustment period as it adapts to proper alignment, but lasting comfort typically follows within 1-2 weeks.
Can I use Protalus in any shoes?
Protalus insoles are designed to fit a wide range of footwear. We offer different models optimized for sneakers, boots, dress shoes, and more. Use our Fit Guide to find the right match.
What if Protalus doesn't work for me?
We offer a 90-day money-back guarantee. If you're not satisfied with your Protalus insoles, you can return them for a full refund — no questions asked.
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