The IDEASTEP JF-308-3 is a low-profile carbon fiber insole designed for running shoes, sports footwear, training shoes, and other performance footwear. It combines a sublimation BK fabric top cover, PU cushioning layer, carbon fiber support plate, and rearfoot GEL pad.
The construction keeps the insole thin while adding structural support and targeted heel cushioning, making it suitable for footwear where internal space and weight need to be carefully controlled.

JF-308-3 Construction
The JF-308-3 uses four main layers, each with a specific function.
Sublimation BK Fabric
The BK fabric forms the top surface and provides the contact layer between the foot and the insole. It can also be adapted for branding requirements in customized projects.
PU Cushioning Layer
The PU layer sits between the top fabric and carbon fiber plate. It adds cushioning without making the entire insole excessively thick.
Carbon Fiber Support Plate
The carbon fiber plate is the main structural element. It provides midfoot rigidity and helps control torsional movement during running, training, and directional changes.
Compared with a conventional soft foam insole, the carbon fiber structure gives the product a more defined support platform while keeping the profile slim.
Rearfoot GEL Pad
A GEL pad is positioned under the rearfoot to provide additional cushioning and help manage heel impact. Using GEL only in the rearfoot area also helps maintain the overall low-profile design.
Key Features of the Thin Carbon Fiber Design
Lightweight Structural Support
The carbon fiber plate provides structural rigidity without requiring a bulky support layer. This makes the JF-308-3 suitable for footwear with limited internal space.
Anti-Torsion Control
The support plate is designed to improve stability during dynamic movement. It is particularly relevant to running and training footwear where the shoe and foot experience changes in direction and load.
Targeted Heel Cushioning
The combination of PU and rearfoot GEL provides cushioning in areas where it is most needed while preserving the thin structure of the insole.
Low-Profile Fit
A slim construction is useful for performance shoes with a close-fitting upper or limited in-shoe volume. The JF-308-3 can be integrated into running shoes, training footwear, and performance sneakers without relying on a thick full-length foam platform.
Applications
The JF-308-3 is mainly suited to performance-oriented footwear, including:
- Running shoes
- Training shoes
- Sports footwear
- Performance sneakers
- Low-profile athletic shoes
- Custom footwear projects
Its final application should be matched with the shoe construction, available internal space, and required level of support.
Why Use Carbon Fiber in a Thin Insole?
Carbon fiber allows an insole to incorporate a relatively rigid support component without relying on a thick plastic or foam structure.
For footwear manufacturers, this can be useful when developing products that require a combination of:
- Low profile
- Lightweight construction
- Midfoot support
- Anti-torsion control
- Heel cushioning
The result is a more structured alternative for performance footwear where both support and shoe volume matter.
OEM and Private Label Options
The JF-308-3 can be supplied for OEM, ODM, wholesale, and private-label projects.
Available options include:
- Logo printing
- Private-label development
- Custom packaging
- Product specification adjustments
- Flexible MOQ
- Bulk orders
These options allow footwear brands, distributors, and insole wholesalers to adapt the product to different market and footwear requirements.

JF-308-3 Specifications
| Specification | Details |
|---|---|
| Model | JF-308-3 |
| Type | Thin Carbon Fiber Insole |
| Top Cover | Sublimation BK Fabric |
| Cushioning Layer | PU |
| Support Plate | Carbon Fiber |
| Heel Cushioning | Rearfoot GEL Pad |
| Key Features | Lightweight, Anti-Torsion Support, Heel Shock Protection |
| Applications | Running, Sports, Training, Performance Footwear |
| Supply | Wholesale / OEM / ODM |
| Customization | Private Label / Logo / Packaging |
Who Is It Designed For?
JF-308-3 is suitable for businesses sourcing low-profile performance insoles for:
- Sports footwear brands
- Running shoe manufacturers
- Footwear distributors
- Insole wholesalers
- Private-label brands
- OEM footwear manufacturers
It provides a ready-made platform for businesses looking to add a thin carbon fiber construction to their footwear range without starting the insole design from scratch.
Wholesale Thin Carbon Fiber Insoles
For buyers sourcing thin carbon fiber insoles wholesale, JF-308-3 combines a carbon fiber support plate with PU cushioning and rearfoot GEL in a compact construction.
IDEASTEP supports bulk, OEM, ODM, and private-label projects, with customization available for branding and packaging requirements.
Contact IDEASTEP to discuss JF-308-3 samples, customization, and wholesale orders.
Related insoles selling links: https://www.aideastep.com/product/jf-308-3-thin-carbon-fiber-insoles/.


