■ Manufacturer: Kōkōdō ■ Size: SWVF size 4 (26-27cm) ■ Discount: Not available. Requests for price reductions will not be accepted. ■ Proxy Service: Highly welcome. ■ Bulk Purchase: Not applicable. ■ Shipping Method: Yu-Packet Post Mini ■ Product Description A certain number of swimmers use these fins in pools where fins are allowed and at masters training sessions. The method involves inserting the foot and securing the heel with the included rubber. The propulsive force is inferior compared to fins, but that disadvantage actually becomes an advantage as a drill element for those who can swim well. Unfortunately, this product does not have the "flexing" concept like fins. Therefore, it may be difficult for those with stiff ankles. Please consider this carefully. Unearthed while organizing a drawer. Recommended for middle-aged and senior masters swimmers with weak kicks. Thank you! #Masters #Fins #VinylFins #TrainingSwimwear #CompetitiveSwimwear Thank you for visiting my room. Buyee, ZenMarket, rakuichiban and other proxy services are welcome. I have a transaction history with Buyee san and rakuichiban san 7 times done.