Thanks to their unique structure 29/71 blade stiffness levels are designed to compliment different kicking styles and do not refer to the weight of a diver.

0 - Hyper Soft - Is a flex that for advanced Freedivers, its slightly softer that the Ultra-Soft. Its for divers who really want to feel the carbon blade stiffen slowly through the kick. Would be perfect for long pool dynamics and deep Competition Dives.

1 - Ultra Soft - Is the softest stiffness level, best suited for divers with weaker legs or with a very slow and wide kick amplitude.

2 - Super Soft - Is the mid stiffness level, best suited for divers with a strong kick and a wider than usual kicking amplitude.

3 - Soft - Is the stiffest stiffness level, best suited for divers with a stronger kick or a powerful kick with short kicking amplitude

4 - Soft+ - Is the same as Soft except it has an extra layer of T700 carbon fibre in the upper part of the blade to provide a bit more punch for lifting heavier equipment or moving faster underwater.