FINIS Bolster Paddles Connects your forearm and hand into a single surface to promote a high elbow position (EVF: early vertical forearm). Designed specifically for technique focus and stroke inement. Creates a high catch by lifting the elbow, ideal for open water and triathlon training. Improves stroke effiency by maintaining a strong, uninterrupted pull. Great for all four swim strokes: butterfly, backstroke, breaststroke and freestyle.