The Mudder Has Passed Strict Independent Slip Resistance Testing With Its Superior Surface Traction, Designed To Perform On Wet Or Dry Surfaces. Made With A Durable Rubber Compound, This Outsole Has Specialized Tread Spacing With Lug Side Profiles That Are Specifically Designed To Shed Mud And Clay. This Boot Was Built Specifically To Lock The Ankle Into The Back Of The Boot To Reduce Heel Slip And Maintain Fit Integrity Even In The Muddiest Conditions. Finally, All Day Comfort And Support Are Achieved By Our Dual Density Footbed, With Memory Foam For A Customized Fit And A Solid Foundation.