The ornamental design for a neckbarrier, as shown and described.
FIG. 1 is a front perspective view of a neck barrier showing my new design.
FIG. 2 is an exploded front perspective view thereof.
FIG. 3 is a left side elevation view thereof.
FIG. 4 is a right side elevation view thereof.
FIG. 5 is a front elevation view thereof.
FIG. 6 is a rear elevation view thereof; and,
FIG. 7 is a top plan view thereof.
The broken lines in the figures are for illustrative purposes only and form no part of the claimed design.
The broken lines are rendered for ease of illustration and do not represent any portion of the claimed design.
The crosshatched pattern, although shown intermittently, is distributed uniformly over the surfaces of the claimed design and is understood to represent material.