Speedo 7530226 Unisex Breast Stroke Fin, Multicoloured, XS Outstanding teaching tool for beginning level breaststrokers and excellent training tool for established breaststrokers Comfortable open heel foot pocket and soft durable TPR material Greatly accelerates the breaststroke whip kick teaching and learning process Significantly reinforces the outward angling or rotation of the feet Provides a greater feel for the water and increased propulsion when the kick is performed properly