The ornamental design for a straddleseat for a vehicle, as shown and described.
FIG. 1 is a perspective view taken from a front, right side of a straddle seat for a vehicle according to our design;
FIG. 2 is a rear elevation view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a perspective view taken from a rear, left side thereof; and,
FIG. 8 is a perspective view taken from a rear, left side of the straddle seat for a vehicle of FIG. 1 shown on a personal watercraft shown in dotted lines.
Throughout the Figures, where shown: (i) the elements of the straddle seat for a vehicle shown in dotted lines are for illustrative purposes only and do not form part of the claimed design; and (ii) in FIGS. 1 to 8, the dotted/dashed lines represent unclaimed boundaries of the claimed design. Portions of the straddle seat for a vehicle not shown in the Figures and not otherwise described in this Specification do not form part of the claimed design.