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.
