Suitable for swimmers of all levels, from beginner refining techniques to competitive athletes building strength—with adjustable wrist compatibilitys Enhancing your swimming with swimming hand paddles, with hydrodynamic silicone to increase strokes efficiency by 30% for powerful propulsions Optimizing freestyles, backstroke, or breaststroke drill in pools, lake, or oceans using these training tool Engineered with wear resistants silicone and PC materials, these fin withstanding chlorine and saltwater while maintaining flexibility season after season Featuring ergonomic silicone construction, these paddles ensures for extended training