Shelter

FIG. 1 is a front right perspective view from above of a shelter according to the new design;

FIG. 2 is a front right perspective view from below thereof;

FIG. 3 is a front left perspective view from below thereof;

FIG. 4 is a rear left perspective view from above thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a left side elevational view thereof;

FIG. 8 is a rear elevational view thereof;

FIG. 9 is a top view thereof;

FIG. 10 is a bottom view thereof; and,

FIG. 11 is a front right perspective view from below with additional broken lines showing environmental subject matter thereof.

The broken lines in the drawings illustrate portions of the environment and the shelter and form no part of the claimed design.