The KEEN PTC Oxford is the perfect choice for all-day comfort on the job. It features a non-marking slip-resistant outsole, and water-resistant leather upper for comfort and wipe-clean convenience. Inside, a plush KEEN.CUSH footbed made from PU and memory foam cradles your foot in all-day comfort. Oil and slip-resistant outsoles which meet or exceed ASTM (American Society for Testing and Materials) F1677-96 MARK II non-slip testing standards.