Featuring steel safety toe protection, the LoggerMax 4417 is built on a heavy-duty Goodyear? welt construction platform for stability with an aggressive Vibram? lug sole that delivers best-in-class slip, oil and chemical resistance. 3M Thinulate? and Red Wing waterproofing keep you comfortable in all weather. This 9-inch boot extends high up the calf for added ankle support on uneven terrain.HROSoles that have been designed and tested to perform on high heat surfaces. Soles identified as HRO are heat resistant to melting at a minimum of 475o Fahrenheit.Red Wing LeatherStarting with hides from U.S.-raised cattle with minimal surface imperfections, we control every step of the process, using time-honored techniques to craft leather with natural beauty and unmatched durability.Vibram? OutsoleExceptional design intersects with innovative rubber compounds to create versatile, performance outsoles. Vibram? outsoles offer excellent traction and high abrasion resistance in a multitude of environments.3M? Thinsulate? UltraThe ultimate insulation for cold weather boots, 3M? Thinsulate? Ultra Insulation is thin, warm and lightweight, with the durability to withstand long hours of hard wear and keep feet warm even in damp conditions.Red Wing Waterproofing SystemThis system uses a 3-layer approach to keep feet dry.1 - Linings help move moisture away from the foot to keep it dry. 2 - Foam provides cushioning and a comfortable fit. 3 - A waterproof bootie is a barrier to keep water out. Tricot, a protective material, is applied to the outside of the bootie to ensure a complete waterproof system.Slip ResistantStandard for performance requirements when evaluating slip resistance of protective footwear using a certified whole shoe test method.