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Compared to ordinary products,the product increase the retractable cord and external water bottle two functions.Rope by mechanical means within the handle arbitrary stretch and contract in a certain length range. External water bottles are connected by a single thread at both ends of the handle. Therefore, the product may have dumbbells and skipping two functions, one is the skipping of the design is easy to carry, the other is a great convenience when sports fans go to diversify training.
Guangdong Ocean University
Mazhang Zhanjiang Guangdong China
Mazhang Zhanjiang Guangdong China, China
Honglang Luo,
Guangdong Ocean University
Yingying Deng,
Guangdong Ocean University
Biaoneng Xu,
Guangdong Ocean University
Weijian Fan,
Guangdong Ocean University