The ornamental design for moccasin, as shown and described.
1. Moccasin
1.1 : Perspective
1.2 : Front
1.3 : Back
1.4 : Right
1.5 : Left
1.6 : Top
1.7 : Bottom
The reproductions of design n. 1 show only the right shoe; the left shoe is omitted because it is symmetrical to the right shoe; in the reproductions of the design, the dotted lines indicate the unclaimed elements for which protection is not sought, while the parts for which protection is sought are represented by solid dark lines in bold.