$149.99 (as of 07/04/2018 04:21 PDT details )
Features:
- Work core muscles including abs, lower back, quads and gluteus
- Ideal for butterfly training to maintain a strong, composed stroke
- Develop a powerful dolphin kick that is generated from the hips
- Increase range of motion in the feet and ankles
- Use for breaststroke drills, backstroke underwater work and side kicking