High quality Brass series pure carbon freediving and spearfishing fins from Hydronaut.

The Hydronaut Brass Series blades are produced using advanced Vacuum Infusion Process (VIP) technology under constant ambient temperature and humidity to create 0% void level, defectless blades which feature a uniform matrix/reinforcement ratio across the entire blade surface.

Each pair of Hydronaut blades undergoes additional post curing processes under controlled temperature in order to achieve optimal mechanical properties and performance considering the divers physique.

Featuring innovative ergonomic Kevlar reinforced Salvimar (K Reinforced) thermo-rubber foot pockets for exceptional comfort and resistance to deformation under stress.

The Hydronaut Brass series blades are specifically designed for divers with overall weight over 85 kg / ~190 lbs.