the same components by contrast with the design according to fig1 an outer shell 55 and a tubular shell 60 are provided these are connected to one another and form a single film again an upper and a lower film are provided which are welded together laterally by means of an overlap 56 in accordance with fig6 the outer shell 55 is manufactured from a robust fabric which again is coated or laminated with synthetic material for this purpose the upper film 55 u2032 comprises a rough outer surface with the robust fabric 56 on the inside 57 it is coated or laminated with synthetic material and thereby forms the tubular shell the lower film 55 u2033 is also made from the robust fabric 56 moreover coated or laminated on the inside 58 with synthetic material to form the tubular shell and provided with the appropriate synthetic material offering good gliding properties on the outside 59 to form the gliding surface moreover in the case of this sports device 50 it is advantageous for a separate piece of film 52 53 to be attached especially welded in each case to the inside of the tubular shell 60 at all positions at which accessory components such as runners handles 11 eyelets or the valve are attached to the outer shell 55 so that an additional seal is provided at these positions this sports device is preferably used as a toboggan which can be steered very easily and is also suitable for deep snow with reference to the exemplary embodiments described above the invention has been adequately explained however it could be presented in still further variants in principle the tubular shell could also be manufactured completely separately from the outer shell.