Kiefer Silicone Webbed Swim Gloves offer maximum resistance during swim workouts or water aerobics. They help build upper body strength for improved swim stroke and overall fitness. Tested and used in many leading universities, these webbed gloves have closed fingertips and are made from a highly durable silicone for extended life. Size large - Men. Multicolored. Kiefer - The First Name in U.S. Swimming since 1947.