The Protalus M-100 Elite is a premium full-length orthotic insole engineered for maximum support and all-day comfort in higher-volume footwear. Built for people who spend long hours on their feet — on concrete, job sites, trails, or anywhere demanding. Extra-Cushion Landing Gear — Full-length design with high-impact absorbing cushioning, purpose-built for work boots, military boots, hiking boots, and roomy footwear. Maximum Geometric Guidance — Promotes on-axis ankle loading to correct overpronation and deliver lasting alignment and stability with every stride. Multi-Density Cushioning — An added cushion layer manages impact and reduces fatigue for true all-day comfort and pain relief. Drop-In Replacement — Seamlessly replaces your factory insole, transforming any boot into a supportive foundation. Universal Fit — Works for flat feet, high arches, and everything in between. Fits average to wide-width feet up to 4E. Insole Type: Full-Length Orthotic | Arch Support: Universal | Fit: Wide Width (up to 4E) | Support Level: Maximum | Technology: Protalus Alignment | Intended Use: Work Boots, Heavy-Duty Footwear | Cushioning: High-Impact Absorbing