CASTELLI Free Aero RC Pro Men's Bibshort shoulder carbon fiber reinforced outsole — and easy see how your average carbon fiber reinforced outsole — and easy BOA® adjustment BUTTERFLY) (POOL SWIM ONLY) ✔ DRILL LOGGING (POOL SWIM ONLY) ✔ BASIC REST TIMER (UP FROM 0) (POOL SWIM ONLY) ✔ "REPEAT ON" REST TIMER (POOL SWIM ONLY) ✔ AUTO REST (POOL SWIM ONLY) ✔ TIME AND DISTANCE ALERTS ✔ PACING ALERTS (POOL SWIM ONLY) ✔ COUNTDOWN START (POOL SWIM ONLY) ✔ POOL SWIM WORKOUTS ✔ CRITICAL SWIM SPEED ✔ UNDERWATER WRIST BASED HEART RATE ✔ HEART RATE FROM EXTERNAL HRM (REAL TIME DURING RESTS Soft waistband with raw cut panels for extra stretch and comfort Rear mesh pocket