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. The SIM is the first practical triathlon and swim training tool to mimic the body position and experience of a wetsuit swim by lifting you up — without overheating from wearing a wetsuit in an 80°F pool. This patent-pending suit is a game changer. It's better than a pull buoy, because it lets you kick and turn naturally. It's also gives just a touch of warmth for those cold morning workouts. The SIM makes every swim a race-specific training workout. Once you try it, you won't ever want to go back. Note, these shorts are designed for the pool and should have excellent durability if you rinse them after use with fresh water and dry them thoroughly. BRAND NEW WITH TAGS SIZE LARGE GREAT FIT & STYLE FIRM PRICE