Aquarapid Swim Fins. An excellent and versatile training fin, designed to enhance the stroke in all styles. Suitable for adults, teenagers, and children. A valuable tool for professional swimmers looking to maintain and correct their stroke mechanics. It also allows swimmers to work on their technique during the pull phase, resulting in a greater power sensation in the water. Ergonomic design to enhance power during training. The curvature of the front part helps initiate the catch phase and focuses on perfecting the stroke technique. Additional water flow holes for improved water contact sensitivity. Fin made of PP (polypropylene) with adjustable soft TPR straps to fit wrists of various sizes, providing greater stability for the palms during swimming. Available in 3 sizes, suitable for all swimming levels and strokes (Small - 18.5 cm x 13 cm; Medium - 21.5 cm x 15 cm; Large - 25 cm x 19.5 cm).