C4 Anatomical Insoles

C4 Anatomical Insoles for Freediving and Spearfishing

The C4 anatomical insoles are specifically designed for freediving and spearfishing users, with special attention to shape, design, and materials to improve comfort and performance in the water.

The anatomical structure of the insoles helps reduce empty spaces inside the foot pockets, often caused by the symmetrical shape of the right and left foot. Without dedicated insoles, these spaces can lead to reduced fit and heat loss.

Technical Features and Benefits

• Comfort and fit: the insoles help support the plantar arch, ensuring a precise, stable fit inside the foot pocket and reducing fatigue during finning.
• Improved finning control: the better fit allows more efficient transfer of propulsive force, optimizing thrust and fin responsiveness during freediving.
• Thermal insulation: reducing empty spaces limits the flow of cold water, keeping the foot at a more stable temperature and reducing the risk of muscle cramps in the water.
• Compatibility: perfectly adaptable to C4 foot pockets and suitable for use with most foot pockets on the market, thanks to the option to trim them along predefined lines.

Size Specifications

The C4 insoles are available in three size ranges, covering a wide range of usable Sizes:

• 38-41
• 41-43
• 44-47

The insole can be shaped along the pre-marked cutting line to achieve a custom size and optimal fit inside the foot pocket.