The ornamental design for jeans, as shown and described.
1.-2. Jeans
1.1 : Perspective
1.2 : Front
1.3 : Back
1.4 : Left
1.5 : Right
1.6 : Top
1.7 : Bottom
2.1 : Perspective
2.2 : Front
2.3 : Back
2.4 : Left
2.5 : Right
2.6 : Top
2.7 : Bottom
1. Design 1 is characterized in that the right back portion of jeans shows a hand shape instead of a pocket while the left back portion shows a pocket; the parts shown by means of broken lines in the reproductions indicate stitches. 2. Design 2 is characterized in that the left back portion of jeans shows a hand shape instead of a pocket while the right back portion shows a pocket; the parts shown by means of broken lines in the reproductions indicate stitches.