3K Full Palm Carbon Fiber Insole for Running Shoes with Shock Absorption and High Elasticity Replacement Inserts in Black Available in 34-48 UK Sizes and 0.8mm, 1.0mm, 1.2mm Thickness Options
3K Full Palm Carbon Fiber Insoles for Enhanced Running Performance and Shock Absorption

These replacement insoles utilise 3K carbon fiber construction to address the specific needs of runners seeking improved cushioning and foot support. The full palm design covers the entire footbed area, providing comprehensive shock absorption during high-impact activities. Available in black with size options from UK 34 to 48, these insoles offer three thickness variations to accommodate different shoe types and personal preferences. Their non-deformable properties ensure they maintain their shape through repeated use, while the corrosion-resistant nature of carbon fiber contributes to their longevity.
Features and Construction

The 3K carbon fiber material forms the foundation of these insoles' performance characteristics. This construction method provides the basis for their shock-absorbing capabilities and structural integrity.
Material and Build
The 3K carbon fiber construction delivers the stated non-deformable properties, meaning the insoles resist compression and maintain their original shape under pressure. This material choice also provides corrosion resistance, which helps the product withstand exposure to moisture and perspiration during running activities. The carbon fiber's inherent characteristics contribute to the high elasticity mentioned, allowing for responsive energy return with each footstrike.
Size and Practical Fit
Available in UK sizes 34 through 48, these insoles accommodate a wide range of foot dimensions. The three thickness options—0.8mm, 1.0mm, and 1.2mm—allow users to select the appropriate profile for their specific footwear. Thinner options work well in snug-fitting running shoes where internal space is limited, while thicker variations provide additional cushioning in shoes with more volume. The black colour ensures compatibility with most running shoe interiors without drawing unnecessary attention.
Uses and Placement

Designed primarily for running applications, these insoles replace standard shoe inserts to enhance performance and comfort during athletic activities.
Event or Professional Use
For competitive runners and regular training, the carbon fiber construction provides consistent shock absorption that can help reduce impact-related fatigue. The full palm design ensures even pressure distribution across the entire foot, which may contribute to improved stability during longer runs. The non-deformable nature means performance characteristics remain consistent throughout extended use, making them suitable for regular training schedules and competitive events.
Everyday Home Use
Beyond dedicated running, these insoles can enhance comfort in everyday athletic footwear. Their shock-absorbing properties provide cushioning for walking and casual wear, while the corrosion-resistant material withstands regular use without deterioration. The size range accommodates most adult foot sizes, making them suitable for various family members' athletic shoes. Their simple replacement function means they can be swapped between different pairs of shoes as needed.
Benefits and Buying Value
The practical advantages of these carbon fiber insoles stem from their material properties and design features, offering specific benefits for running enthusiasts.
Reuse and Low Maintenance
The corrosion-resistant properties of the carbon fiber material contribute to the product's durability and ease of maintenance. Unlike some foam-based insoles that compress over time, the non-deformable construction maintains its shock-absorbing characteristics through repeated use. This longevity means the insoles provide consistent performance across multiple running sessions, representing value through extended usability rather than frequent replacement.
Why Choose This Product
These insoles offer specific advantages for runners seeking to enhance their existing footwear. The three thickness options provide customisation opportunities not always available with standard replacement insoles. The full palm coverage delivers comprehensive foot support compared to partial-length designs, while the carbon fiber material provides the stated shock absorption and elasticity properties. The wide size range ensures most runners can find their proper fit within the available options.