the angle between the longitudinal axis of the hose body 2 and the individual fibers of the braiding a functionally appropriate volume flexibility of the hose body 2 arises in the case of a twist angle of between preferably approximately 38 u00b0 and 48 u00b0 the twist angle may amount for example to approximately 43 u00b0 the outer hose 5 disposed coaxially with the two feed line tubes 3 4 and with the hose body 2 has a higher pressure loadability and a higher rigidity as compared with the first hose body 2 the outer hose 5 can consequently offer counterforces to the radial pressure forces exerted by the expanding hose body on the cylindrical inner wall of the outer body and can absorb higher pressure forces as compared with the hose body 2 fig2 shows a cross section of the first hose body 2 in the position of rest in the position of rest the cross section of the first hose body 2 has an oval shape which as compared with a round cross sectional shape in the position of rest gives the hose body 2 particularly more advantageous elastic properties which are effected for example in high flexibility during the contraction of the hose body fig3 shows a cross section of the first hose body 2 in the expanded state the cross section then has an approximately circular shape fig4 shows a cross section through a second hose body 2 u2032 and an outer hose 5 surrounding the latter the second hose body 2 u2032 has a wavy undulating corrugated cross section similar to an accordion bellows shape which gives the second hose body 2 u2032 particularly advantageous elastic properties such.