Hair Extension

FIG. 1 is a front perspective view of a hair extension showing the new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear 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 bottom plan view thereof; and,

FIG. 8 is an exploded front perspective view of the hair extension.

The broken line showing of the adhesive illustrates environment and forms no part of the claimed design. All other broken lines illustrate portions of the hair extension that form no part of the claimed design.