- Effective training tool: The U-shaped design and multifunctional holding points guide smoother stroke mechanics and support sustainable improvements in swimming performance. - Anti-slip system: An anti-slip structure with anatomical grip edges and skin-friendly material provides secure grip and uninterrupted training during swimming. - Comprehensive use: Maintains stable buoyancy across training variations. The universal shape fits different swimming paces and delivers reliable performance without compromise. - Distinctive design: Color choices enhance easy findability while the minimalist form remains adaptable to different adult training methods. Use scenarios - Drill sessions for freestyle and backstroke: Use the U-shaped form and grip points to cue arm path, tempo, and body position during technique drills. - Rehab or conditioning: The buoyant design supports training with controlled ranges of motion while the secure grip maintains proper alignment. - Group training or coaching: Color coding helps athletes and coaches locate the device quickly in lanes and standardize drills across multiple swimmers.