By converting his training sessions from foot fins to shinfinTM fins, Isarez significantly improves his butterfly technique. He feels them enhancing his body hydrodynamics by giving him the correct tension distribution in his lower body, legs and feet. This is because they give him the correct power from his hips. Furthermore, his body remembers his new shinfinTM enhanced butterfly technique, even after he takes them off for training sessions without fins. He gets good training from going into flip-turns a bit harder until the fins lift out of the water, and pushing off with both feet contacting the wall.
Isarez’s review from London, UK
“I am a butterfly enthusiast. Your shinfinTM fins are worth the extra money, especially for swimmers who are technique-focused. I usually felt I learnt nothing technically from foot fins. In contrast, the shinfinTM fins make me feel true to my body. They give the correct tension distribution throughout the lower-body, legs and feet. This, therefore, enhances the body’s hydrodynamics properly while focusing on and maintaining technique. Taking off the fins, I already feel that I learned to lift up more efficiently in the butterfly (clearing the water surface less vertically for breathing). I must thank you for inventing the shinfinTM fins.”