be at least laterally elastically extensible to dynamically fit at the wearer 39 s waist the terms u201c elastic u201d and u201c elastically extensible u201d refer herein to the property of a material and or an element of the diaper 20 whereby the material and or the element can be elongated to a practical extent upon the application of tension and will substantially return to its original length or near its original length after the tension is released disposable diapers often have a waist feature 34 disposed in both the front waist region 36 and the back waist region 38 the waist feature 34 may be constructed in any of several different configurations known in the art exemplary waist feature constructions include those described in u s pat no 4 515 595 issued may 7 1985 and u s pat no 5 221 274 issued jun 22 1993 both of which are hereby incorporated herein by reference in the diaper 20 of the present invention the waist feature 34 preferably provides generally only minimal lateral force that is lateral force sufficient only to hold the front waist region 36 and the back waist region 38 substantially in contact with the body this level of lateral force is adequate because the waist feature 34 preferably is subjected to only minimal downward force due to the diaper 20 being configured such that the diagonal support.