C4 & #tide,from the sea, for the sea:regenerated plastic, performancewithout compromise.
INTROC4, a leading innovator in freediving and spearfishing equipment, is proud to announce an exciting new collaboration with #tide, a pioneering force in the transformation of ocean-bound plastic into high-quality materials. Together, we are setting a new standard for sustainability in the world of freediving, proving that performance and environmental responsibility can go hand in hand—without increasing costs for our customers.At C4, we have always believed that the ocean is more than just a place for adventure—it is a home, a sanctuary that must be protected. Every dive we take reminds us of the urgent need to combat marine pollution, and we are committed to making a difference. This partnership with #tide is a bold step in that direction.


#tide ocean material® is an award-winning resource created from recycled ocean-bound plastic. Using an advanced upcycling process developed in collaboration with the Swiss University of Applied Sciences, #tide transforms plastic waste into premium-quality pellets, yarns, and filaments. The result is a raw material that is not only 100% recycled but also delivers outstanding mechanical properties, making it a perfect match for high-performance products.
C4 has embraced this revolutionary material by integrating #tide’s recycled plastic pellets into the production of all our plastic freediving fins. This groundbreaking innovation does not compromise quality—on the contrary, it enhances it. Thanks to the exceptional elasticity and resilience of #tide’s material, our fins deliver superior reactivity, durability, and aesthetics. Every kick becomes more efficient, allowing divers to experience the ocean with greater ease and confidence.And the best part? The price remains the same! Our commitment to sustainability does not come at an extra cost to you. By choosing C4’s new eco-friendly fins, you are not only getting the same top-tier performance at the same price but also actively contributing to cleaner oceans.

INTROThe models using this new #tide material include UP Black, UP Aurea, UP Sideral, Storm, and Predator for the C4brand, and Maxx for the H.Dessault by C4 Technology brand. These fins embody the perfect combination of innovation, sustainability, and performance.Beyond performance, this collaboration represents a shared commitment to protecting marine ecosystems. By repurposing ocean-bound plastic, we are reducing pollution, cutting CO2 emissions by up to 80% compared to virgin plastic production, and supporting local communities engaged in waste collection and management.These fins are more than just equipment; they are symbols of what can be achieved when experience, innovation, and sustainability come together. With every dive, we reaffirm our dedication to a cleaner, healthier ocean.Join us in this movement. Explore the new C4 x #tide collection and take a stand for our oceans. Every choice matters—choose sustainability, choose performance, choose the future.
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