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9 km/hr) in the water
They are used if you are between fin sizes to make the fins fit better and more comfortably
Designed to be used alone or in conjunction with a pull buoy
A high back
Most pools have a standard gradual slope
Posture Trainer | Head Alignment Training Tool Category_Briefs 9 km/hr) in the waterThe Posture Trainer promotes correct head and spine alignment, which is key to an efficient swim stroke. When secured to the back center of the head, the device should be undetectable until the swimmer exceeds the recommended posture range. Keeping the head in the proper position throughout the entire swimming motion corrects spinal alignment, which elevates the hips, leading to a decrease in drag and an increase in kick propulsion. The Posture
