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Fulcrum: Increases the efficiency of the swimmer arm, locking the wrist elbow and shoulder in the optimum position, focusing on the swim on technical improvement; It develops a proper arm thanks to the mechanism of Muscle Memory; It has been designed as a complementary tool for blades to refine the swim arm technique of every level, from neophytes to professionals; It consists of two eyelets: one fit to the forearm, the other holds its hand. The action with which the swimmer wears FulCRUM creates the ideal wrist / elbow angle during the gripping / holding phase at the start of the arm. By doing so, so-called "muscle memory" is stimulated and you get to automatically perform the correct arm. In the aerial stage, then, the elbow is pushed up high. If the hand and forearm position is not the correct one, the tool slips away: there is no margin of error. Your arm will be perfect The use of this tool in the training sessions of young and young athletes allows you to straighten out all those classic missions in the arm that would otherwise be behind forever, affecting the outcome of future races. FulCRUM develops a proper arm thanks to the mechanism of "Muscle Memory" It is available for the younger version of FulCRUM Jr. !!!!! Ask for it at the time of purchase