A catheter includes a tubular inner layer, a reinforcing layer disposed at least partially within the inner layer or on an outer circumference of the inner layer, and an outer layer. The reinforcing member is made of wound wires, each adjacent pair of the wires having a gap therebetween. A bonding portion is disposed in the gap of the reinforcing layer and includes an inner layer protruding portion of the inner layer that extends into the outer layer and is engaged with an outer layer protruding portion of the outer layer that extends into the inner layer. This configuration enlarges the area across which the outer layer and the inner layer are bonded to each other within the gap of the reinforcing layer, leading to a strengthened bond between the outer layer and the inner layer.
