`Remember me on this computer` option
Select the `Remember me on this computer` option if you wish to be automatically logged on to the computer in future. Your account will remain active for 45 days. Please do not use the `Remember me` option if using a computer with public access or that is used by more than one person.
C4 is the largest producer of carbon fiber fins at very competitive prices! Available all over the world, the brand managed to dominate this sector of market by producing and selling products of the highest technology, design and comfort. C4 designs are based on the study of users´ feedback and very rigorous testing conducted in diverse condition and different environments. Moreover, a great reliability can be easily confirmed by results in National Championships, World Championship, World Records that has been accomplished by divers that used C4.