Formthotics Original Red Single Hard Full Length Orthotic Insole

Formthotics Original Red Single Hard Full-Length Orthotic Insoles are firm-density, full-length inserts built for people who need maximum structural control — think flat feet, overpronation, high-impact work, or sport. The red colour is Formthotics’ hard-density code, sitting at the firm end of their range, so if a clinician has told you that you need extra support rather than cushioning, this is the density to look for.

They run the full length of the shoe (heel to toe), which means they replace your existing insole entirely rather than sitting on top of it — giving even pressure distribution and consistent alignment support from heel strike through to push-off.

Who They're For

• People with flat feet or overpronation who need firm correction, not soft cushioning
• Tradies, nurses, retail and hospitality workers on their feet all day
• Athletes and gym-goers wanting stability during lateral movement
• Anyone following a podiatrist or physiotherapist's rehab program that calls for a hard-density orthotic
• People replacing worn-out or softer insoles that aren't holding their shape

Who They're Not For

If you're after cushioning and shock absorption rather than firm control (e.g. sensitive or arthritic feet), Formthotics' softer densities (blue/green) are usually a better starting point — worth checking with your podiatrist which colour suits your foot type.

Key Benefits

• Full-length, heel-to-toe structured support
• Hard-density construction for maximum stability and control
• Assists with foot alignment, overpronation, and pressure distribution
• Lightweight, durable, and reshapeable to your foot with body heat
• Fits into work boots, sports shoes, and most everyday footwear (space permitting)
• Widely used and recommended by podiatrists and physiotherapists

Product Specifications

Care Instructions

Remove the insoles from footwear regularly and allow them to air dry. Clean gently using a damp cloth if required. Avoid excessive heat, direct sunlight, or machine washing — heat can reshape the orthotic.

Frequently Asked Questions

What does the red colour mean on Formthotics insoles?

Red indicates Formthotics' hard-density orthotic — the firmest option in their range, designed for maximum structural support and control rather than cushioning.

Are Formthotics Original Red insoles good for flat feet?

Yes. The hard density and full-length design are commonly recommended by podiatrists for flat feet and overpronation, where firm structural support is needed to help control foot alignment.

Can I wear these in work boots?

Yes, the full-length design fits most work boots and everyday footwear, provided there's enough internal room — remove the factory insole first for the best fit.

Do Formthotics orthotics need to be fitted by a podiatrist?

They're designed to be usable straight out of the box and can be heat-moulded for a more custom fit, though many people use them as prescribed by a podiatrist or physiotherapist as part of a treatment plan.

How long do Formthotics insoles last?

With regular use and proper care (air drying, avoiding heat), Formthotics orthotics typically hold their shape for 12–18 months, depending on activity level and footwear rotation.

What's the difference between Formthotics Original and other Formthotics ranges?

The Original range is the firmer, more structural option built for support and control, compared to Formthotics' cushioning-focused ranges aimed at comfort and shock absorption.

Compare densities in our Formthotics Blue & Green softer-density insoles, or explore the full range of orthotics, foot supports, and rehabilitation equipment.