The original design of the US STRECHCORDZ WITHLES equipment is used to improve swimming, while Niclas.Romanov posture method(Posemethod)The founder applied it to running technology, from 2015, the Xu Guofeng coach of Taiwan and China''''''''''''''''''''''''''''''''s general coach, very recommended this tool, he believes this tool helps posture running technology teaching andExercise, he often uses teaching in posture.
Composed of a pair of combined mounting rings and two 1.2 meters long rubber, divided into 5 different weight tensiles according to color
Silver: 3-8 pounds
Yellow: 5-14 pounds
Green: 8-24 pounds
Red: 12-31 pounds
Blue: 14-34 pounds
* Resistance of each rubber to 1 to 3 times in the original length of the original length
Packing Size: 23.37 x 19.56 x 5.59 cm; 290.3 grams
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