Lance for guiding a gas into an air belt

Lance (1) for guiding gas into an airbelt (2), wherein the lance (1) is couplable with a gas introduction device for inflating the lance (1) and the airbelt (2) by introducing a gas, wherein the lance (1) extending in the interior of the airbelt (2) and guided together with the airbelt (1) around a deflection device (13) comprises a hose fabric (4), which hose fabric (4) comprises a plurality of warp threads (7) extending in the warp thread direction (9) made from a warp thread material and a plurality of weft threads (8) extending in the weft thread direction (10) made from a weft thread material, and at least one plastic layer (6) designed as a gas barrier layer, so that the lance (1) has a defined gas tightness.