Customizable training experience: The detachable elastic hook lets you adjust Resistance quickly, matching your skill level and training goals and expanding your workout options. Enhanced strength training with flippers: The detachable flippers provide extra resistance, helping to build upper body strength and refine swimming techniques. Train anywhere: Designed for use in gyms, parks, or at home, so you can maintain your training routine with minimal setup. Long-lasting flexibility: Made from high elastic TPE material for durability and sustained flexibility during workouts. Use scenarios: - Pool sessions: Attach the hook and/or flippers to perform lap-focused sets that challenge pulling power and stroke technique. - Dry-land workouts: Use the adjustable resistance for upper-body circuits at home or in the gym. - Travel-friendly routine: Lightweight, compact design fits in a bag for workouts at hotel pools or outdoor facilities.