The freediving fins in carbon C4 Allblack HT are light and snappy recommended for both spearfishing and pure freediving. Available in two variants: with the innovative C300 shoes, the lightest on the market, and the C400 rubber shoes the second lightest on the market. Combined with the use of the most prestigious HYPERTECH carbon yarn for the blades. The final flap on the blade guarantees this fin model maximum performance in the water. Available in 4 different blade hardnesses; Supersoft 20, soft 25, medium 30 and hard 40. Stiffness, lightness, strength and excellent value for money make these fins truly unique. The rigidity allows a greater thrust given by the force coming from the heel.