Great Lakes Stone Stack design. The great lakes rock! A stack of rocks that can be found in the great lakes. A petoskey stone from Lake Michigan, a Lake Superior agate, cain coral, a pudding stone, and a brachiopod fossil from Lake Huron. For the rock hounders of the midwest that spend summers at the lake looking for the perfect stone up north at the cottage. For the lover of the unsalted Great Lakes, explorer of the sleeping bear dunes, adventurer of the upper peninsula pictured rocks. Lightweight, Classic fit, Double-needle sleeve and bottom hem