FAQs

What are flat feet and what causes them?

Flat feet also known as fallen arches or overpronation occur when the arch of the foot collapses toward the ground during standing and walking, causing the foot to roll inward with every step. Most people are born with flat feet and develop an arch during childhood but for some the arch never fully develops, and for others it collapses over time due to age, weight, injury, pregnancy or prolonged use of unsupportive footwear. Flat feet are one of the most common foot conditions affecting adults and children and while many people with flat feet experience no pain at all, others develop a chain of problems that travels upward through the heel, ankle, knee, hip and lower back.

Do flat feet cause heel pain and plantar fasciitis?

Yes flat feet and overpronation are among the primary biomechanical drivers of plantar fasciitis and heel pain. When the arch collapses it places excessive tensile strain on the plantar fascia causing the sharp, stabbing first-step morning pain that characterises plantar fasciitis. The Synxsole One Stop Insoles correct the arch collapse that drives this strain the most important insole intervention for flat-footed people experiencing heel pain.

Can Syxplus compression sleeves help with flat foot pain?

Yes, the SynxPlus Foot & Ankle Compression Sleeves complement insole support for flat feet by reducing the ankle swelling and arch fatigue that overpronation causes. ARTG-approved Class 2 Medical Compression improves circulation, reduces inflammation in the arch and ankle tissue and provides structural support that stabilises the ankle during activity particularly effective for people whose flat feet cause ankle rolling, burning arch pain or swelling after extended standing and walking.

What is the best arch support for flat shoes, ballet flats and dance shoes?

Standard insoles don't fit in ballet flats, sandals, loafers or dance shoes which is exactly where flat-footed people need support most. The Gel Invisi Arch Pad Trio provides discreet medical-grade PU gel arch support in three colours clear, black and beige that sits invisibly inside flat shoes, dance shoes and any footwear where a full insole won't fit. Apply to clean dry shoes with the self-adhesive backing and the support is in place invisible, effective and immediately noticeable underfoot.

Can flat feet cause ankle, knee, hip and lower back pain?

Yes flat feet affect the alignment of the entire lower limb. When the foot rolls inward excessively it creates compensatory stress that travels upward through the ankle, knee, hip and lower back with every step. The Synxsole One Stop Insoles correct the overpronation at the source reducing the compensatory load on every structure above the foot. Most people notice meaningful improvement in knee, hip and lower back pain within the first few weeks of consistent insole use because the alignment issue causing the upstream symptoms has been addressed at the foundation.

The Complete Podiatrist Recommended Approach

Flat Feet & Fallen Arches

Flat feet also known as fallen arches or overpronation occur when the arch of the foot collapses toward the ground during standing and walking, causing the foot to roll inward with every step. For many people flat feet cause no pain at all. But for others, the lack of arch support creates a chain reaction of problems that travels upward through the body heel pain, arch pain, ankle pain, shin splints, knee pain, hip pain and lower back pain all commonly associated with untreated flat feet and fallen arches. The right support, applied consistently, makes a significant difference.

The Right Support Changes Everything
Flat feet and fallen arches respond well to conservative management the right combination of arch support, cushioning and compression addresses the biomechanical load that flat feet create and reduces the pain and dysfunction it causes throughout the lower limb. The approach that works is the one that covers every contributing factor simultaneously.

Arch Support The Foundation of Flat Foot Management
The primary intervention for flat feet is restoring the arch support the foot isn't providing naturally. The Synxsole One Stop Insoles deliver podiatrist-developed arch support in a patented slimline design that fits into work shoes, sports shoes, fashion footwear and everyday casual wear the best insoles for flat feet across every shoe style. For children with flat feet, growing pains or developing fallen arches, the Synxsole Kids Insoles provide the same clinical arch support specifically designed for the growing foot with a low arch height that guides natural foot development without over-correcting.

Arch Support in Flat Shoes & Dance Shoes
Standard insoles don't fit in ballet flats, sandals, loafers or dance shoes which is exactly where flat-footed people need support most. The Gel Invisi Arch Pad Trio provides discreet arch support in three colours clear, black and beige that sit invisibly inside flat shoes, dance shoes and any footwear where a full insole won't fit. Medical grade PU gel that conforms to the arch and distributes pressure without overcrowding the toe box.

Heel Cushioning - Protect Against Impact
Flat feet alter the way impact travels through the foot concentrating shock at the heel and forefoot rather than distributing it through the arch. The Synxgeli Gel Heel Cushions absorb and disperse this impact at the calcaneus reducing the heel pain, arch fatigue and lower limb stress that flat feet create through daily weight bearing activity.

Reduce Swelling & Support Recovery
The SynxPlus Foot & Ankle Compression Sleeves deliver ARTG-approved Class 2 Medical Compression (23–32 mmHg) reducing the ankle and arch swelling that flat feet and overpronation cause, improving circulation and providing the ankle support that helps stabilise the foot during activity. Particularly effective for people whose flat feet cause ankle rolling, swelling after activity or the burning arch pain that builds through long days on their feet.

Developed with 30+ Years of Podiatric Expertise
Every product in this collection is podiatrist-recommended and developed with 30+ years of clinical expertise in flat foot management and lower limb biomechanics. Trusted by podiatrists for adults and children the complete approach to flat foot support that addresses every contributing factor from the ground up.