Cressi Light Fin Pool and Training Short Blade Fin with Bag, 5.5/6.5 Short Bladed Fin Designed for Swim & Snorkeling For Pool, Recreational Swimming, Snorkeling and Swim Training Highly Reactive and Lightweight Blade Material Agile and Effective Kicking While Not Tiring-Out-Legs Blade Engineered to Ensure Perfect Muscle Training w/o Cramps or Discomfort