Alpha Pro Fin, training gear developed jointly by swimmer Michael Phelps and coach Bob Bowman. ◆ Purchased in February 2025. ¥4,200 / ¥4,620 (tax included) 【Brand】Phelps Aquasphere 【Product Name】Alpha Fin 【Color】Blue 【Size】XXS 21.5-23cm 【Manufacturer】Aquasphere 【Purpose】Enhancing kicking power in swimming 【Product Description】 Designed to replicate a swimmer's natural kick, the Alpha Pro Fin is a short-blade fin designed to fit the shape of each foot. It is 70% lighter than conventional swim fins. 【Features】 ・The design that fits each foot achieves a natural kick. ・70% lighter than conventional rubber fins, improving comfort and allowing for the reproduction of a more correct form. ・Short blade that replicates the swimming rhythm of a race. ・Hard EVA foam construction that enhances propulsion. ・EVA: Highly durable, closed-cell foam construction that prevents water from entering. Used about twice. This size is mainly for children and women, and it seems that there are only blue and green colors. Shipping via Yamato Transport will cost over 1000 yen, so I cannot lower the price any further. Thank you for your understanding.