As I understand theese fins can be ordered in custom hardness and even colour and or camouflage to suit both spearfishers or freedivers.
They seem to be an excellent product made in spain by Carlos Thomas and the 85 model is a really long carbonfiber-fin.
Here is the homepage:
http://www.carbontek.net/en/index.htm
They seem to be an excellent product made in spain by Carlos Thomas and the 85 model is a really long carbonfiber-fin.
Here is the homepage:
http://www.carbontek.net/en/index.htm