The Finis Shooter Monofin L is made with short and stiff fiberglass blades. The perfect fins to get you to your race pace. This monofin works well for breaststroke drills, backstroke underwater work and side kicking. Great for strength training that will build core muscles including abs, lower back, quads and glutes. It will also help to increase the range of motion in your feet and ankles. It is also a good option for butterfly training.