I claim the ornamental design for an adaptable cover for both airline seat headrest and tray, as shown and described.
FIG. 1 is an isometric top view of an adaptable cover for both airline seat headrest and tray showing my new design, wherein the adaptable cover for both airline seat headrest and tray is shown attached to an airline seat tray;
FIG. 2 is an isometric bottom view thereof;
FIG. 3 is an alternate isometric bottom view thereof showing an attachment interface;
FIG. 4 is an isometric top view of the adaptable cover for both airline seat headrest and tray introduced in FIG. 1, wherein the adaptable cover for both airline seat headrest and tray is shown in an uninstalled configuration;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a front view thereof;
FIG. 8 is a right side view thereof;
FIG. 9 is a rear view thereof, including a magnified view detailing an attachment interface;
FIG. 10 is a magnified view detailing an attachment interface; and,
FIG. 11 is a left side view thereof.
The short broken lines shown in FIGS. 1 through 3 are representative of an airline seat tray and the long broken lines shown throughout the drawings are representative of stitching, both of which are included for illustrative purposes only and form no part of the claimed invention.