Used by river professionals, adventure racers, rescue agencies, and military units, these are the hardest-working boots on the water. Heavy-duty lugged traction sole keeps you on your feet in varied terrain, and the comfortable 7mm neoprene insole absorbs the shock of every step. Lace-up synthetic leather and 5mm neoprene upper provide warmth, unmatched ankle support, and a secure fit. Whole sizes only. Women order one size smaller. 1/2 sizes order one size larger.