For over 20 years, the strokemakers paddle has been renewed to create the foundation of many swimmers around the world, including America and Japan. By starting in Japan, we revised the performance of the traditional American stroke maker paddle, and the production technology that specializes in the sharpest observation and detail of Made In Japan has been able to completely eliminate the distortion and misalignment that occurs in conventional products. It can be used to practice stroke strokes in all 4 swimming methods like the original US paddle. Ideal for stroke foundation and muscle building The size, shape and use of the paddle are the same as before, so you can use it with confidence.