We recognize that there are a lot more than just four seasons. We celebrate the seasons between the seasons. We welcome the slush, mud, and floods that can come from unpredictable weather all over the world. The Mudder has passed strict independent slip resistance testing with its superior surface traction, designed to perform on wet or dry surfaces. Through innovative technology, this boot was constructed to repel mud. Finally, all day comfort and support is achieved by our dual density footbed, with memory foam for a customized fit and a polyurethane foundation. •100% Waterproof, 100% MUCKPROOF •Soft, Flexible Rubber Upper Provides Durable Protection •Dual Density Footbed with Memory Foam for Long Lasting Comfort •bioDEWIX™ Anti-Microbial Footbed Insert Topcover with NZYM™ for Odor Control and Moisture Management •Extra Toe & Heel Underlays for Additional Protection •Composite Toe for Non-Metallic Protection •Durable Rubber Outsole with Superior Surface Traction •SRC Rated-Slip Resistant