Swimmersbest Kickband Restrictor Strap Take control of your kick! Power both your forward and back kick and improve kick muscles creating a longer kick Softer and more comfortable than tubing, rubber straps, and other options Ideal length to create resistance for ages 13+ Choose from 2 strengths. The light band is best for entry level ages (11+) and the heavy band is an all around band suited for ages 13+