The Rocky Portland service boot is a classic collection that has been providing reliable footwear for almost 20 years. Built with polishable full grain leather 900 denier nylon and a heavy duty YKK side zipper this Sleek lightweight and flexible 6-inch boot is designed to help you excel on the job. Constructed with an oil and slip resisting outsole with heavy duty rubber lugs and Rocky Vapor Pass Waterproof technology this boot gives you the foundation and protection you need to perform across any terrain. Experience unbelievable comfort with the flexible San Crispino construction Rocky Air-Port footbed and a padded collar. Go all day with this reinvented service boot from Rocky. Rocky Air-Port cushion footbed Fiberglass shank Heavy-duty YKK side zipper 6 Inches in height San Crispino construction Polishable Full Grain Leather with 900 Denier Nylon Oil & Slip Resisting EVA/ Rubber Outsole Comfort Padding Collar & Tongue Speed Lace Hook & Lacing System Rocky Mens Portland 6 Black Side Zip Waterproof Public Service Boot RKD0071 BLACK"