Wide widths are welcome in this accommodating men’s running shoe. The 840 is designed with a fuller fit so there’s plenty of room to move and insert an orthotic, if you need it. 12 mm drop: due to variances created during the development and manufacturing processes, all references to 12 mm drop are approximate Blown rubber outsole Full EVA (Ethyl Vinyl Acetate) strobel board for all-day comfort Medicare