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This Trolley Case is effortless because of its built-in braking system, through which can completely solve the embarrassing problem of speed uncontrollable when going up or down. The braking system is similar with the one in bicycle. When going down, user can prevent it from sliding by applying the brake. When on flat ground, just turn off the button.
Junye Tao Xiaolong Lou Mohan Li Libin Hao