The ornamental design for a strapband, as shown and described.
FIG. 1 is a top perspective view of a strap band showing a first embodiment of the present invention.
FIG. 2 is a left side elevation view of FIG. 1.
FIG. 3 is a right side elevation view of FIG. 1.
FIG. 4 is a front side elevation view of FIG. 1.
FIG. 5 is a rear side elevation view of FIG. 1.
FIG. 6 is a top plan view of FIG. 1.
FIG. 7 is a bottom plan view of FIG. 1.
FIG. 8 is a top perspective view of a strap band showing a second embodiment of the present invention.
FIG. 9 is a left side elevation view of FIG. 8.
FIG. 10 is a right side elevation view of FIG. 8.
FIG. 11 is a front side elevation view of FIG. 8.
FIG. 12 is a rear side elevation view of FIG. 8.
FIG. 13 is a top plan view of FIG. 8; and,
FIG. 14 is a bottom plan view of FIG. 8.
The broken lines shown in the figures represent portions of the strap band and form no part of the claimed design. The dash-dot-dash-dot broken lines define the bounds of the claimed design and form no part thereof. The surfaces are lightly lined for contour only. No claim is made to surface texture of the particular design.