Georgia Glennville Waterproof Wellington Work Boots are comfortable pull-on work boots that are ready to get the job done. Inside, these men's wellingtons 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, Nylon.