JOINTS HOPU Carbon Fiber Spearfishing Fins – Reef Edition

The JOINTS HOPU Carbon Fiber Spearfishing Fins – Reef Edition were developed in partnership with C4specifically for demanding spearfishing.

Built for deep dives, strong currents and long sessions in the water, the HOPU fins combine efficient propulsion with a lightweight, progressive response. The carbon fiber blades are designed to deliver smooth power during the kick cycle, with increasing thrust when more effort is applied during deep ascents or challenging conditions.

The C4 250 foot pockets provide a lightweight and comfortable connection to the blade, while the single-screw mounting system makes assembly and disassembly quick and practical, especially when travelling.

The Reef Edition features a distinctive green reef-inspired finish while maintaining the same performance characteristics of the HOPU platform.

Technical Specifications:

• Carbon fiber blades
• Developed in partnership with C4
• Designed for spearfishing and deep diving
• Progressive blade response
• C4 250 full-foot pockets
• Single-screw blade mounting system
• Stiffness: Medium – recommended up to 85 kg
• Stiffness: Hard – recommended over 85 kg
• Foot pocket sizes: 36–37 / 38–39 / 40–41 / 41–42 / 42–43 / 43–44 / 44–45 / 46–47
• Color: Green / Black