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What Makes a Strengthener Special?
The Strengthener is the core of our 3-Step System. It’s where transformation begins. Its rigid structure challenges and strengthens your feet gradually, while the strategic design helps alleviate conditions like plantar fasciitis, flat feet, and shin splints. Built for wear-in progress and long-term use, it's best used in deep, supportive shoes and becomes more comfortable as your foot strengthens. Remember: progress, not perfection — every 30-minute increment is a win.
Total Body Alignment Begins Here
Reposition your feet to support knees, hips, and back through every step.
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100,000+ Customers
25+years of helping people
Proven Results
Backed by Harvard Medical Research
You're getting expert support for the long run.
With every online purchase, our team is here to help you get the best fit and comfort from your arch supports. From personalised fitting tips to ongoing aftercare advice, we’re just a message away to ensure your supports keep working for your lifestyle.
Supercharge Your Comfort with Our Cushions
Pair your Strengtheners with our Super Athletic Cushions for an unbeatable combo. Use the Strengthener for structure and correction, while the Cushions add shock absorption and comfort.
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Frequently Asked Questions
Put it in a deep, supportive shoe first thing in the morning. Start with just 30 minutes a day to let your feet adapt. Gradually increase wear time as comfort and strength improve.
Most users see improvements in balance, posture, or foot comfort within 2 to 4 weeks, typically once they’re consistently using the Strengthener and progressing through it as part of the 3‑Step system.
Strengtheners work best in shoes with a deep heel cup, moderate to firm midsole, and stable structure—think athletic or supportive everyday footwear. They may not suit ultrathin flats or minimalist designs.
Absolutely. In fact, the Strengthener is engineered to help conditions like plantar fasciitis, flat feet, or general foot fatigue. Start slowly, and it can ease discomfort by restoring proper alignment. See the Medical Research page for more information.
Nope! Made of durable materials, Strengtheners have a lifetime manufacturer's warranty. Unlike other insoles or orthotics, you will continue to wear them for years to come.