The ornamental design for a pair of floormats, as shown and described.
FIG. 1 is an isometric view of my design for a pair of floor mats, showing the right hand side floor mat;
FIG. 2 is an isometric view of my design for a pair of floor mats showing the left hand side floor mat;
FIG. 3 is a cross-sectional view of my design along Line 3—3 of FIG. 1;
FIG. 4 is a cross-sectional view of my design along Line 4—4 of FIG. 2;
FIG. 5 is a top plan view of my design for a pair of floor mats showing the right hand side floor mat; and,
FIG. 6 is a top plan view of my design for a pair of floor mats showing the left hand side floor mat.
The bottom and sides of the pair of floor mats are unadorned and form no portion of the design; the broken line showing of environment is for illustrative purposes only and forms no part of the claimed design.