The ornamental design for a cap and armrestcover, as shown and described.
FIG. 1 is a front right perspective view of the cap and armrest cover with flexible portion pictured to conform to an armrest;
FIG. 2 is a front right perspective view of the cap and armrest cover with the flexible portion unsupported;
FIG. 3 is a perspective view of the cap and armrest cover shown in FIG. 1 on an arm chair to show environment;
FIG. 4 is a front plan view of the cap and armrest cover shown in FIG. 1;
FIG. 5 is a back plan view of the cap and armrest cover shown in FIG. 1;
FIG. 6 is a top plan view of the cap and armrest cover shown in FIG. 1;
FIG. 7 is a bottom plan view of the cap and armrest cover shown in FIG. 1; and,
FIG. 8 is a right plan view of the cap and armrest cover shown in FIG. 1, the left side plan view being a mirror image thereof.
The broken line showing an armchair in FIG. 3 are directed to environment and form no part of the claimed design. The broken lines within the clamed design in embodiments 1, 3, 6 and 8 that depict a curved rectangular surface, indicate a non-claimed surface and are for illustrative purposes only. The broken lines in embodiments 5 and 7 that depict a strap are for illustrative purposes only and form no part of the claimed design. The broken lines in embodiment 1 depicting a T and in embodiment 2 depicting the word LOGO are for illustrative purposes only and are not a part of the claimed design.