Wearing article

1. A wearing article, comprising:

a chassis including a longitudinal direction, a transverse direction, a body-facing side, a garment-facing side opposite to said body-facing side, a front waist region, a rear waist region, a crotch region extending between said front and rear waist regions, and leg side edges; and

leg elastic members of a flat band shape and being attached to said chassis along said leg side edges,

wherein

said chassis has, along at least one of said leg elastic members, at least one folding guide line about which the chassis and the respective leg elastic member are foldable to thereby conform in shape to a wearer's body when the diaper is being worn by the wearer, and

said at least one folding guide line comprises a series of depressions arranged intermittently in at least one row that overlaps and extends along said respective leg elastic member.

2. The wearing article defined by claim 1 , wherein:

said chassis comprises an inner sheet lying on said body-facing side and an outer sheet lying on said garment-facing side;

said leg elastic members are attached to the chassis so as to be sandwiched between said inner and outer sheets; and

said depressions extend from the garment-facing side toward the body-facing side of said outer sheet.

3. The wearing article defined by claim 2 , wherein said outer sheet is formed of a fibrous non-woven fabric of crimped fibers.

4. The wearing article defined by claim 2 , wherein

said chassis comprises a lattice pattern of the depressions arranged in a plurality of rows and columns over at least one of said front and rear waist regions; and

said at least one folding guide line is defined by at least one of said rows or columns that overlaps the respective leg elastic member.

5. The wearing article defined by claim 2 , wherein the depressions comprise fused fibers of said outer sheet.

6. The wearing article defined by claim 2 , wherein the depressions comprise compressed fibers of said outer sheet.

7. The wearing article defined by claim 1 , wherein each of said leg elastic members has a width dimension in a range of about 10 to 30 mm.

8. The wearing article defined by claim 1 , wherein each of said leg elastic members has a stretch ratio in a range of about 1.5 to 3.

9. The wearing article defined by claim 1 , wherein a distance between each pair of the adjacent depressions is smaller than a dimension of each said depression as measured along the respective leg elastic member, whereby said series of depressions is closely contiguous to each other and defines said folding guide line.