TUSA's world-renowned, best-selling diving fin!! This is the Liberator X (Ten) in size S, BK (Black). The size is a perfect fit for boot sizes 23cm to 26cm. The fin blade is made of a material that combines resilience and flexibility, making it easy to use for beginner divers and ideal for snorkeling. In particular, the soft material on the side ribs allows the blade to flex from the base, providing propulsion with a light kick. Additionally, the winglets at the tip of the blade prevent turbulence, creating a water flow effect that generates propulsion, resulting in smooth fin work. I repeat, this is the best fin for beginners and snorkelers, offering high propulsion with a light kicking feel. Of course, it is also recommended for women and children. The product is brand new and unused, so you can use it with confidence. Thank you very much.