Duluth Trading Co | Shoes | Duluth Trading Co Tower Hill 。Men’s size 13 Duluth Trading Co. Tower Hill Knit Lace-Up in the color gray. The Duluth Tower Hill Knit Lace-Ups are designed to handle high miles and hard uphill pushes – like the hike to the top of Tower Hill Park, which stands a breathtaking 530 feet above the Twin Ports of Duluth. The breathable fully knit upper is crafted to keep your feet cool and comfortable while Duluth Trading PopFlight Insole prevents pressure points and cushions every stride. And the rubber pod outsole keeps you stable on uncertain terrain. In excellent preowned condition.