the passage to permit selective lateral and angular positioning of the first and second support platforms in a horizontal plane and the bolt is engageable in the aligned apertures to secure the support platforms in such position application_number US 60315890 A description with reference to fig1 4 the bicycle seat 10 of the present invention includes a first support platform 12 a second support platform 14 laterally spaced from first support platform 12 and contacting flanges 16 and 18 joined respectively to the first and second support platforms to be centrally disposed therebetween in slidable overlapping arrangement as particularly illustrated in fig1 and 2 the first and second support platforms 12 and 14 are defined respectively by a generally ovate peripheral wall 20 and 22 joined to a generally concave upper surface 24 configured to individually support a buttock of a rider seated on the support platforms flange 16 is joined to the peripheral wall 20 of first support platform 12 in submerged relation to upper surface 24 to extend horizontally toward second support platform 14 and flange 18 is joined to the peripheral wall 22 of second support platform 14 in submerged relation to upper surface 24 to extend horizontally toward first support platform 12 and closely underlying flange 16 flanges 16 and 18 each include a rear edge 26 joined to the respective peripheral walls 20 and 22 a front edge 28 joined to the respective peripheral walls 20 and 22 and a side edge 30 angularly joining rear edge 26 to front edge 28 side edges 30 are joined to front edges 28 at an obtuse angle such that the side edges 30 taper from the front edges 28 laterally outwardly in the direction of the opposing support platform to join the rear edges 26 at an.