A pull-on article having a longitudinal direction and a transverse direction orthogonal to said longitudinal direction, said article comprising: a chassis; a pair of leg openings; said chassis including: a first waist region having first side edges opposed in said transverse direction and a first end edge between said first side edges, said first waist region being formed of a fibrous non-woven fabric including at least thermoplastic fibers; a second waist region having second side edges opposed in said transverse direction and a second end edge between said second side edges as well as opposed to said first end edge in said longitudinal direction, said second waist region being formed of said fibrous non-woven fabric including at least thermoplastic fibers; and a crotch region between said first and second waist region and having third side edges opposed in said transverse direction; said waist opening and said leg openings being defined by weld-bonding said first and second side edges (23,24) intermittently in said longitudinal direction to form welded seams; said crotch region being provided along said third side edges with leg elastic members which are formed into a band shape and made of an elasticized fibrous non-woven fabric including at least thermoplastic fibers, wherein said elasticized fibrous non-woven fabric forming said leg elastic members includes elastically extendible thermoplastic fibers and non-elastically extendible thermoplastic fibers as said thermoplastic fibers, said leg elastic members are treated by a gear extending process wherin said fibrous non-woven fabric is passed through between a pair of gears so that said fibrous non-woven fabric including said non-elastically extendible fibers are extendible, and an elongation-at-break (%) of said leg elastic members is less than three times that of said first and second waist regions. a chassis; a pair of leg openings; a first waist region having first side edges opposed in said transverse direction and a first end edge between said first side edges, said first waist region being formed of a fibrous non-woven fabric including at least thermoplastic fibers; a second waist region having second side edges opposed in said transverse direction and a second end edge between said second side edges as well as opposed to said first end edge in said longitudinal direction, said second waist region being formed of said fibrous non-woven fabric including at least thermoplastic fibers; and a crotch region between said first and second waist region and having third side edges opposed in said transverse direction; said waist opening and said leg openings being defined by weld-bonding said first and second side edges (23,24) intermittently in said longitudinal direction to form welded seams; said crotch region being provided along said third side edges with leg elastic members which are formed into a band shape and made of an elasticized fibrous non-woven fabric including at least thermoplastic fibers, wherein said elasticized fibrous non-woven fabric forming said leg elastic members includes elastically extendible thermoplastic fibers and non-elastically extendible thermoplastic fibers as said thermoplastic fibers, said leg elastic members are treated by a gear extending process wherin said fibrous non-woven fabric is passed through between a pair of gears so that said fibrous non-woven fabric including said non-elastically extendible fibers are extendible, and an elongation-at-break (%) of said leg elastic members is less than three times that of said first and second waist regions.