We've redesigned our iconic Chore boot with a slimmer fit for women who love the outdoors. The classic Muck Boot neoprene adjusts to the unique contours of your foot, making these reliable boots flexible, 100% waterproof and lightweight. These tough boots feature a rubber overlay and quick cleaning sole, allowing you more time to get on with the important stuff. The upper is reinforced in both the toe and heel area, plus additional arch support giving you the protection you need. The 5mm neoprene makes these boots lightweight and flexible, with breathable air mesh lining to keep you cool on warmer days. 100% Waterproof, 100% MUCKPROOF 5mm Neoprene Bootie for Comfort and Performance bioDEWIX™ Anti-Microbial Footbed Insert Topcover with NZYM™ for Odor Control and Moisture Management Breathable Mesh Sandwich-fabric Lining Improves Air Circulation Built on a True Women's Last Easy to Clean Rubber Overlays Pull tab for easy on/off Quadruple rubber heel reinforcement Quick cleaning rubber outsole offers durability and traction on slick surfaces Recommend half sizes order up Reinforced arch support Rugged Outsole Design Steel shank for structural support