Bio Fusion 4° Orthotic Insoles for Flat Feet and Overpronation

Discover professional-grade foot support with the Bio Fusion 4° Orthotic Insoles from LBG Medical.

Designed with an integrated 4-degree medial rearfoot post and a supportive medium arch profile, these advanced orthotic inserts provide structured support for people experiencing mild to moderate overpronation, reduced arch stability or inward foot rolling.

Manufactured from high-quality biodegradable TPU, the Bio Fusion insoles combine durability, flexibility and biomechanical control in a lightweight, low-profile design.

Their slim heel cup and adaptable construction make them suitable for many trainers, work shoes, walking shoes and everyday enclosed footwear with sufficient internal space.

Size Information

Size: Small
UK shoe size: 5–6.5
EU shoe size: 38–40
US women’s size: 7–8.5
US men’s size: 6–7.5
Arch profile: Medium
Rearfoot posting: Integrated 4-degree medial post
Quantity: One pair

Please check your shoe size carefully before ordering.

Structured Support for Overpronation

Overpronation occurs when the foot rolls inwards excessively during standing or walking. Some people with lower arches or flat feet may also experience reduced foot stability.

The integrated 4° medial rearfoot post is designed to provide rearfoot stabilisation and biomechanical control while allowing a relatively natural range of movement.

According to LBG Medical, the 4-degree version is intended for mild to moderate overpronation and users requiring moderate correction without excessive restriction.

These insoles provide supportive control but do not permanently change or cure flat feet or any medical condition.

Integrated 4° Medial Rearfoot Post

Unlike ordinary cushioned insoles, Bio Fusion incorporates a four-degree medial rearfoot post directly into its shell.

This built-in structure provides additional support around the heel and rearfoot, helping manage excessive inward movement and promote a more stable position inside suitable footwear.

The integrated construction provides consistent support without relying solely on soft cushioning or separate loose inserts.

Supportive Medium Arch Profile

The contoured medium arch provides structured support beneath the foot.

It may suit users who require more control than a flat or basic cushioned insole can offer.

The arch profile is designed to support the foot rather than simply fill the shoe, helping create a more stable and secure feel during everyday walking and standing.

Correct arch selection is important. An unsuitable arch height may cause pressure or discomfort, so seek professional fitting advice if you are uncertain.

Lightweight Biodegradable TPU Shell

The Bio Fusion shell is made from high-quality biodegradable thermoplastic polyurethane, commonly known as TPU.

This specialist material provides a combination of:

• Durability
• Flexibility
• Resilience
• Lightweight support
• Heat-mouldable construction
• Low-profile performance

The shell is designed to retain its supportive shape while avoiding the excessive bulk associated with some traditional rigid orthotics.

Slim, Low-Profile Heel Cup

A slim-profile heel cup helps the orthotic sit securely inside compatible footwear while providing structured rearfoot support.

Its low-bulk design makes it easier to accommodate inside many shoes than thicker orthotic products.

For the best fit, use the insoles in secure, enclosed footwear with sufficient depth. Where possible, remove the shoe’s original loose insole before fitting the orthotic.

Professionally Customisable Design

Bio Fusion orthotics can be professionally modified through:

• Heat moulding
• Grinding
• Rearfoot wedges
• Heel cushions
• Heel lifts
• Self-adhesive top covers

These options allow a qualified podiatrist, orthotist or appropriately trained healthcare professional to adjust the orthotics according to the individual wearer’s needs.

Do not attempt specialist heat moulding, grinding or clinical modification without appropriate training and equipment.

Comfortable EVA Top Covers

Self-adhesive EVA top covers are designed to provide cushioning between the foot and the supportive orthotic shell.

The EVA material helps improve comfort while allowing the TPU base to deliver structured support.

LBG Medical describes its top covers as using high-quality EVA with an antimicrobial microfibre covering, helping improve hygiene and discourage bacterial growth.

Check the product photographs to confirm which top covers are included with this specific boxed set.

Suitable For

The Bio Fusion 4° Orthotic Insoles may be suitable for:

• Mild to moderate overpronation
• Reduced rearfoot stability
• Lower arches requiring structured support
• Excessive inward foot movement
• Everyday walking
• Prolonged standing
• Work shoes with sufficient internal space
• Trainers with removable insoles
• Professional podiatry customisation

Suitability varies between individuals. Anyone experiencing persistent foot, ankle, knee or walking pain should seek advice from a qualified healthcare professional.

Key Features

• Genuine Bio Fusion orthotic insoles
• Manufactured by LBG Medical
• Integrated 4° medial rearfoot post
• Medium arch profile
• Designed for mild to moderate overpronation
• Provides structured rearfoot and arch support
• Lightweight biodegradable TPU shell
• Durable, flexible and resilient construction
• Slim, low-profile heel cup
• Professionally heat-mouldable and grindable
• Customisable with the supplied components
• Self-adhesive EVA top covers
• Suitable for men and women
• Small: UK 5–6.5 / EU 38–40
• Supplied as one pair
• Original Bio Fusion retail packaging

Included in the Box

• One pair of Bio Fusion orthotic shells
• Two heel cushions
• Two 5mm heel lifts
• Rearfoot customisation wedges
• Self-adhesive EVA top covers
• Original Bio Fusion retail packaging

The manufacturer’s standard component pack may include 2°, 4° and 6° rearfoot wedges and both full-length and three-quarter top covers.

Please refer to the product photographs for the exact packaging and supplied contents.

How to Use

1. Confirm that the marked size corresponds with your usual shoe size.

2. Remove the existing loose insoles from your shoes where possible.

3. Place the Bio Fusion orthotics inside the shoes with each heel section sitting flat and securely at the back.

4. Check that the orthotics do not cause crowding, slipping, rubbing or excessive pressure.

5. Begin with shorter periods of wear and increase gradually as your feet adjust.

6. Stop using the product and seek professional advice if you experience persistent pain, numbness, rubbing, skin irritation or discomfort.

7. For professional customisation, take the complete product and all supplied components to a qualified podiatrist or orthotist.

Footwear Compatibility

These orthotic inserts are best suited to secure, enclosed footwear with adequate depth and internal space.

They may fit:

• Everyday lace-up shoes
• Trainers with removable insoles
• Selected work shoes
• Walking footwear
• Roomier casual shoes

They may not fit correctly inside:

• Very narrow footwear
• Shallow shoes
• Open-backed shoes
• Sandals
• Tightly fitted formal shoes
• Footwear without sufficient heel depth

Compatibility depends on the shape and construction of the individual shoe.

Important Information

This product provides supportive orthotic control but is not a cure for flat feet, overpronation or any medical condition.

Correct orthotic selection depends on your foot shape, gait, symptoms, footwear and individual support requirements.

Consult an appropriate healthcare professional before use if you have:

• Diabetes
• Poor circulation
• Reduced sensation or neuropathy
• Open wounds or skin problems
• An existing foot or ankle injury
• Persistent or unexplained pain
• A diagnosed musculoskeletal condition

The orthotics may require professional fitting or modification. Comfort and results vary between individuals.

Why Buy from Luxury For Less?

Shop confidently with a UK-based independent retailer.

Your order will be:

• Carefully checked
• Securely packaged
• Dispatched promptly
• Supported by personal customer service

Add the Bio Fusion 4° Orthotic Insoles to your basket today for professional-quality arch and rearfoot support at excellent value.