FIG. 1 is a top perspective view of the boost sunglasses;

FIG. 2 is a front perspective view of the boost sunglasses;

FIG. 3 is a right side perspective view of the boost sunglasses;

FIG. 4 is a left side perspective view of the boost sunglasses;

FIG. 5 is a bottom perspective view of the boost sunglasses; and,

FIG. 6 is a back perspective view of the boost sunglasses.

The matter delineated in dashed lines forms no part of the claimed ornamental design.