Your swimming technique can only be improved if you continuously challenge yourself- so test what you’re capable of using these BetterTimes fins to strengthen your legs and improve your race time. These can be used for all strokes, including the breaststroke. The ellipsoidal blade and offset footpocket will advance your kick technique and give you power to push through the lane! The adjustable rubber heel strap and foot shaped pocket will allow you to get a comfortable fit while the soft rubber will reduce chafing or cutting on your foot so you can focus on your stroke and not discomfort! These unisex fins are recommended for experienced swimmers, not necessarily open water or racing.