To attain good pressure tightness and sliding performance at the same time while light weight and flexibility are kept.

A protective layer 3 where a monofilament 3a is braided like a cross is stacked on the outer periphery of a pressure tight reinforcing layer 2 where a filament yarn 2a is braided, thereby forming the projecting and recessed outer peripheral surface. Thus, the pressure tight performance is heightened with the filament yarn 2a not exposed to the outer surface, and the contact of the protective layer 3 with the outer peripheral surface is a point contact so as to reduce friction.