The ornamental design for demim jeans with interchangeable side seam strips and back pockets, as shown and described.
FIG. 1 is a perspective view of denim jeans with interchangeable side seam strips and back pockets showing my new design;
FIG. 2 is a front elevational view of the invention;
FIG. 3 is a rear elevational view of the invention;
FIG. 4 is a left-side elevational view of the invention;
FIG. 6 is a right-side elevational view of the invention;
FIG. 6 is a top plan view of the invention; and,
FIG. 7 is a bottom plan view of the invention.
The broken lines showing the messages and designs in FIGS. 1, 2, 3 and 4 are included for the purpose of illustrating the invention in use, and form no part of the claimed design.