The ornamental design for a vest, as shown and described.
1.-2. Vests
Fig. 1.1 is a front view of a first embodiment of a vest showing our new design;
Fig. 1.2 is a back view thereof;
Fig. 2.1 is a front view of a second embodiment of the vest; and
Fig. 2.2 is a back view thereof.
The vest shoulder has the following characteristics: a single long sleeve sewn to the vest, which it may be placed on either the right side or the left side; the vest is characterized by a single sleeve the neckline of the jacket does not presents lapels, is characterized by a deep round neckline; the vest features a front three button closure, and there is a side pocket in correspondence of the central button.