DragSox are training devices used in swimming to increase resistance while swimming. They are worn on the swimmer’s legs and are designed to create drag in the water. The added resistance makes the swimmer work harder, helping to improve strength, endurance, and kicking power. DragSox are commonly used in swimming drills to build leg muscles and increase speed and efficiency in the water. They can be adjusted for different levels of resistance depending on the swimmer's training needs.

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