PURPOSE: To obtain a hose of good fatigue-resisting property, adhesive property, moisture- and heat-resisting properties, and of low dimensional change with the use by forming a fiber reinforcing layer by polyester polymer as a core component and polyamide polymer as a sheath component.

CONSTITUTION: With a hose consisting one or more fiber reinforcing layers 2, the fiber reinforcing layer 2 is composed of core-sheath type compound fibers, each of which consists of polyester polymer as a core component and polyamide polymer as a sheath component. The core-sheath type compound fiber is a type of fiber in which a core component C exists in the center of the cross section of a single fiber and a sheath component surrounds the core component. The number of the core component can be either one or more.