Ralph uses shinfin^TM fins to improve the swimming technique of his grandchildren of all ages, for freestyle, backstroke and butterfly. The fins encourage them to activate their stronger muscles by kicking from their hips with straighter knees, and build up their stamina and muscle memory.

Ralph’s review from Delran, USA

“I have found that shinfin^TM fins are a positive alternative to promoting a more anatomical utilization of the muscles for freestyle, backstroke and butterfly. Just swim freestyle across the pool and feel the fins aid in your leg motions. The fins encourage the muscles of the upper leg, gluteus, lower back and abs to rhythmically move the legs. Presto! That was fun, easy and fast. Your legs do get tired as they react to the exercise and build muscle but it’s more advantageous to practice something technically more correct than perfecting self-defeating inappropriate muscle memory.”