ARIAT. 10033993. MENS BIG RIG WATERPROOF COMP TOE BOOT. DARK BROWN. Bigger is truly better with the Big Rig. With extended sizes and widths generous fit roomier opening and deeper scallop to accommodate high insteps and wider calves it is built to address the needs of all customers. It s tough enough to withstand harsh outdoor work environments or oil and gas exploration and comfortable enough to wear all day every day.