Our product with more scientific internal structure to ensure the service life. 
100% purity ethylene glyco used.No frost or eroding.Long lasting shock absorbtion. Filling up with water or with nothing are all prohibited during production. 
The frame and surface remains tough after more than 200hours of salt spray test 
Rubber bushing cotains 55% natural rubber .Durable and comfortable .
Impact resistant & multiple road conditions adapted bottom shell .