The Amplitude Is A Work Boot With The Features Of A Hiker. The Rubber Outsole Has Been Designed For A Multitude Of Environments, Whether It Be Indoors Or Out. The Outsole Properties Also Make These Oil And Slip Resistant Boots. These Boots Are Also Very Lightweight And Flexible Because Of The Cement Construction And An Eva Midsole. This All-weather Boot Also Features The Guaranteed Georgia Waterproof System. With The Georgia Waterproof System, Air Gets In, But Water Does not! Like Most Hikers, The Amplitude Includes A High Performance Mesh Lining That Wicks Moisture Away Throughout The Day. With The Amp (advanced Memory Polyurethane) Insole You Get A Customized Fit! The Memory Foam Top Conforms To The Shape Of Your Foot And Offers Maximum Cushioning.