and a fastening fitting 5 the belt is passed through a slidable tongue piece 6 locating as a middle suspending matter the slidable tongue piece 6 will be engaged with a buckle 7 which is suspended to an anchorage hole 8 selected within the vehicle inside the reference numeral 9 is a member to guide and direct the shoulder belt position 1 that was pulled out from the retractor 4 fixed on some place of the side wall the member 9 is not necessary if the retractor is provided here at this position also the reference numeral 10 represents a seat in the vehicle fig3 to 5 are diagrams to show an example of weaving waist belt 2 fig6 and 7 are diagrams to show an example of a woven texture of the shoulder belt 1 and fig8 shows an embodiment of a texture at the boundary part 3 between portion belt 1 and 2 in the drawings the reference numerals 11 12 13 14 15 and 16 are warps in a complete texture the above warps are arrayed in many number in parallel and to both sides thereof are added warps 21 22 23 and 24 having selvage shown in fig4 to determine the belt width of the present invention the reference numerals 31 and 32 are warps having smaller elongation than the warps 11 to 16 further the reference numerals 41 42 43 44 45 and 46 are wefts in the waist belt 2 and the reference numerals 51 52 53 54 55 56 57 and 58 are wefts in the shoulder belt 1 in fig3 to 5 the aforesaid warps.