An article of footwear comprising: a sole comprising an outsole and a footbed element configured to support a foot away from the outsole; a plurality of substantially transverse ribs formed on the footbed element so that a groove is disposed between adjacent ones of the ribs; a forefoot set of the substantially transverse ribs disposed at a forefoot region of the footbed element having a first geometry including first rib heights, first base widths of grooves interposed between adjacent ribs and first spacings between adjacent ribs; a heel set of the substantially transverse ribs disposed at a heel region of the footbed element having a second geometry including second rib heights, second base widths of grooves interposed between adjacent ribs and second spacings between adjacent ribs; and an arch set of the substantially transverse ribs disposed at an arch region of the footbed element having a third geometry that differs from the first and second geometries, the third geometry including third rib heights, third base widths of grooves between adjacent ribs and third spacings between adjacent ribs, characterized in that (i) in the forefoot region the frist rib heights and the first base widths decrease moving from a forward forefoot portion rearward along the footbed element, wherein the first spacings decrease moving from the foreword forefoot portion rearward along the footbed element, and wherein an angle of inclination of the ribs increases moving rearward along the footbed element from ribs that are generally angled forward to ribs that are generally oriented perpendicular to the outsole in an area below the ball of the user's forefoot; and (ii) in the heel region the second rib heights and the second base widths decrease moving from the rearward heel portion forward along the footbed element, wherein the first spacings decrease moving from the rearward heel portion forward along the footbed element and wherein the angle of inclination of the ribs increases moving forward along the footbed element from ribs that are generally angled forward to ribs that are generally oriented perpendicular to the outsole in an area below the heel of the user's forefoot. a sole comprising an outsole and a footbed element configured to support a foot away from the outsole; a plurality of substantially transverse ribs formed on the footbed element so that a groove is disposed between adjacent ones of the ribs; a forefoot set of the substantially transverse ribs disposed at a forefoot region of the footbed element having a first geometry including first rib heights, first base widths of grooves interposed between adjacent ribs and first spacings between adjacent ribs; a heel set of the substantially transverse ribs disposed at a heel region of the footbed element having a second geometry including second rib heights, second base widths of grooves interposed between adjacent ribs and second spacings between adjacent ribs; and an arch set of the substantially transverse ribs disposed at an arch region of the footbed element having a third geometry that differs from the first and second geometries, the third geometry including third rib heights, third base widths of grooves between adjacent ribs and third spacings between adjacent ribs, (i) in the forefoot region the frist rib heights and the first base widths decrease moving from a forward forefoot portion rearward along the footbed element, wherein the first spacings decrease moving from the foreword forefoot portion rearward along the footbed element, and wherein an angle of inclination of the ribs increases moving rearward along the footbed element from ribs that are generally angled forward to ribs that are generally oriented perpendicular to the outsole in an area below the ball of the user's forefoot; and (ii) in the heel region the second rib heights and the second base widths decrease moving from the rearward heel portion forward along the footbed element, wherein the first spacings decrease moving from the rearward heel portion forward along the footbed element and wherein the angle of inclination of the ribs increases moving forward along the footbed element from ribs that are generally angled forward to ribs that are generally oriented perpendicular to the outsole in an area below the heel of the user's forefoot.