Promotes an early vertical forearm that uses the entire forearm and hand during the pull. Perfecting this technique with the Bolster Paddles encourages a high elbow and will lead to more efficient swimming. The Bolster Paddles are also a great way to build upper body strength. The wide paddle design offers resistance throughout the pull and can be applied to all four strokes. Using the Bolster Paddles overtime will improve entry, catch technique, pull and recovery.