Georgia Boot Glennville Waterproof Work Boots are comfortable work boots that keep up with you and your work. Inside, these men's boots have the TDC (Technology Driven Comfort) polyurethane insole. The front part of the insole features air channels to circulate air as you take a step. The middle of the insole supplies arch support. The polyurethane construction won't break down or lose its shape, even after a great amount of wear. Material: Leather.