An Early Vertical Forearm (EVF) Position is another name for the “Catch” or the position the forearm and hand must get into for peak propulsive efficiency. There is no cookie-cutter position for any swimmer but establishing the most effective EVF is clearly one of the most important fundamentals responsible for fast swimming”. The depth of the hand and the angle of the hand / forearm, upper arm and shoulder will be different for every swimmer due to physiological differences (strength, flexibility, body type). For more information on EVF go to youtube and simply type in EVF + Swimming.