<p>The SIM Pro.3 is no less than a secret weapon for triathletes looking for gains in their swim. By giving you a small assist in buoyancy at the hips, the SIM Pro.3 lets you focus on the more nuanced parts of your stroke (timing of kick, pull and body rotation) and on efficient forward propulsion and drag reduction—rather than fighting to keep your hips up. Plus, they make training more fun and get you to the pool more often. We challenge you to wear SIM Shorts regularly and not improve your swim.</p> <p><meta charset="utf-8"><a href="#size-chart"><img alt="Size Chart" src="https://img.roka.com/icons/size-chart-ruler-icon.jpg"> Size Chart</a></p> <!----><!---->